The e3D Tool Changer Does What No Other Printers Can Do, but It's Far From Perfect
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- เผยแพร่เมื่อ 10 ต.ค. 2019
- The e3D tool changing printer is a one of a kind groundbreaking printer which achieves a new level of functionality not seen since the invention of FDM technology some 30 years ago! It is phenomenal, and yet there is a lot to criticize about it and also e3D as a company.
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you sir came across as a gigantic tool in this video. none of your proposed solutions are actually better than e3d's, most of them are patently worse. you're obviously making this video with the intent to be edgy and generate views. thanks for wasting our time.
Man, I really want to let there be some fair criticism of my videos, but all I get are shallow angry boys who want to call me names and infer that my person is somehow inferior because I disparaged something they want to love and made them feel insecure. What does my persona have to do with E3D's tool changer? This isn't a team sport. This is engineering. There are right and wrong answers. Criticize the words/message not the man. I realize that my words are so unassailable that you have no rebuttal and hence you resort to tearing my persona down. Could you maybe listen to what you Mom taught you when you were 5 "If you can't say something nice. Don't say anything at all."
@@DesignPrototypeTest man you give me a headache
@@DesignPrototypeTest Your videos are honestly trash.
@@joejia1410 Have you seen his videos? Firstly in this video he goes on the criticise E3D for so many things that he couldn't have done better if he was on their engineering team. Plus, E3D already mentioned that the tool-changer is an en engineering DEMO. Obviously it wouldn't be useful to non-engineering people like him (I know he is an engineer, but he doesn't carry himself that way). Secondly, I've seen his other videos doxxing the chinese for bringing 3D printing to the masses and dubbing them as enemies of innovation. I could go on but he has made many videos that have resulted in backlash. Maybe you're trolling, or maybe you're just oblivious to the videos he's made in the past, in which case I would direct you to watching them before coming to a conclusion about my statement. He has had many chances to make decent objective videos but he chooses to make these sensational-type videos that are honestly hard to watch.
Your competing with Nerdly for most irritating speaker. Perhaps you should design and build a machine to compete with E3D since you clearly are much better than any of their designers.
Hello,
I am the ToolChanger / Motion System lead engineer at E3D and I have been working on this project since it's inception in 2017. I would like to respond to the questions you raised and correct some of your assumptions and make things a little more clear and concise.
The aluminium X-Bar is, infact, cheaper than the carbon, both in monetary cost and in assembly time. The carbon bar does has a different CTE to both aluminium and steel. But by swapping to aluminium we can closer match the rail, and we match the frame and top plate too. So both the x-bar, base and extrusions all expand at the same rate. This drastically reduces, if not removes, any possibility of the X-Bar binding on the two y-axis rails. On top of that the assembly process for building the carbon bar required the use of brass inserts. These inserts were not as reliable as we had hoped and lead to some misalignment when it came to installing the rail. The bowing of the carbon can indeed be compensated for by mesh levelling the bed, but what that can't fix is the position of the tools and we were having issues on the centre two tools due to the bowing of the bar and the pickup head being out of alignment. So, swapping to the aluminium X-Bar greatly improved the reliability of the tool pick up, reduced time and financial costs, increased tortional strength by a factor of three and all for a penalty of a measly ~30g in additional weight. Incidentally we fitted moons motors to the X&Y axes after the Beta30 run which more than compensates for the additional weight.
The big 6mm thick bed plate you mention, probably not necessary to be so thick, but it is cut out of the same section as the top U plate, from the gap between the two arms. It's actually cheaper than using a separate 4mm sheet, plus it reduces waste.
The Union Jack in the base plate is intentional. It is there as a subliminal message so that we can use it as a mind control trigger so that we can control you all. Unfortunately it looks like you have spotted it as a Union Jack and now I have to make up some rubbish about it being there to reduce weight and that, in my usual over-engineering approach, the five holes in the plate are there for a blanking plate to close the bottom in with, and the post I made on the E3D forum with the DXF for the plate is there just to backup my cover story in the event that I am rumbled.
The wiring is labelled at both ends with where it should be connected and there is a link to the duet wiring diagrams, however you may have a point about plugging in the cables. I shall update the documentation with where to plug in the wires. Seems the documentation isn't as over detailed as some have claimed 😋
I won't go into the other areas of E3Ds products you touched upon as I was not involved in their development. I can recommend you email support@e3d-online.com and pose your questions there. Our support team will be more than happy to help and are in direct contact with the engineers. You could even do a follow up video afterwards 😊
P.S. E3D does sell filament.....
*This comment deserves a standing ovation*
Thank you, simply, thank you for this!
I am Greg, 3D printer of humans. Reporting for duty.
Dying laughing
What a great time to be alive! I am enjoying this rap battle and Greg here has his mic drop moment.
Much respect to E3D for giving this much of an in-depth comment to a channel that doesn't deserve it. Sadly, people watch this guy and his misguided ramblings.
I think you've completely missed the point of the Tool Changer. It's NOT a 3D printer. It's a tool changing platform. If you're only inspired to make a 4 material printer, you've bought the wrong product.
I'm a Cnc machinist (and I also just machined my own printer). The first thing you learn about cnc is speed. Yes you could waste a tremendous amount of time ramping into each of those pockets, or you could remove 30+ minutes of ramping with a 60 second predrill cycle. The reality is there is less than 30 minutes of machining there with a properly programmed setup.
As for sheet metal, not a good candidate. The goal of this printer was to bring ease of accuracy. A machined crossbar can (and should) be within a few thousands of flat. Bending sheet metal will not achieve that accuracy, at least not at a cost saving. Carbonfiber could pull the top deck inwards as it shrinks, especially with the horseshoe shape. That means the crossbar would experience different resistances along those parallel rails and could easily equate to a few thou of bowing, especially when the steel rail is not expanding at the same rate. Which coincides with the reason they said they replaced it.
As for cost, I can tell you after having just machined my own that you are getting a bargain for what you paid for this machine.
As a design engineer I'd also like to add that the "fancy" cross-bar is an entirely appropriate spot to spend effort on optimization and production. The weight of the cross-bar is a key limiting factor in the printers speed/quality trade-off. I.e. put your costs and effort where it matters. You'll notice that there aren't any truss pockets in the top deck...
and ... machining is not as expensive as it is suggested to be. If I can load up the table of my Bridgeport with a night of work, I don't really care if it takes 5 or 8 hours. I'm definitely not getting out of bed to reload my machine in the middle of the night 😂
The problem you have is that you are approaching this with actual knowledge. He is doing it with his over inflated sense of his "knowledge" which is unfortunately lacking. The fact he was suggesting folded sheet metal with "maybe" cut and folded holes as a better idea just screams he has zero clue and is just the equivalent of your mates dad ranting over something when you were a kid and mum is in the background saying "yes dear". I don't know why I keep subjecting myself to his videos. It's like a car crash I just keep coming back to see if it was that bad! 😂 😂 😂
@@TJWhiteStar I wasn't so much posting to change his mind. More to give others a different point of view and help them avoid what I would consider to be mistakes. My experience has paid off. My printer is a bit larger than E3d's and is pushing a direct drive extruder at 250mm/s.
Honestly, if he didn't make this silly video... a lot of us gullible folks wouldn't learn all these interesting bits of info from him being corrected. So thank you for correcting him and making me just a tiny bit wiser. ^.^
Isn't this thing supposed to be engineering porn? It's a demo machine to prove the concept of toolchangers. E3D always said they dont want to compete with real machine manufacturers. They just want to sell the components
The commentary is not the product of a real Engineer but of a guy whose self-importance indicates an inability to understand true engineering and the reasons behind a design concept. My understanding is that the printer was made as a test bench, not a final product, to allow a designer to experiment with the real product, the tool changer, before implementing a dedicated printer in a manufacturing environment. Sure, as a qualified Engineer, I should be able to design a final product that meets all the criticisms made and more but this is a product that points to the directions I would need to go. I wont be watching more videos from this source.
Mike, your avatar is that of an old wizened "engineer" as you claim. Yet your words sound like a 20 something with a chip on his shoulder. You attack me instead of the criticisms I leveled at e3D's designs. This is called "ad hominem" and any veteran engineer would not commit such cheating. The only thing you say of merit is something which many others have already said that e3D released this printer not as a final product but as a beta test platform. My response to which is to criticize the business savvy of e3D (a hotend company) for releasing a Beta-Test printer as a test platform for all of their competitors to optimize their hotend designs upon. e3D had a year and a half to make this thing less beta and a more polished product. I reserved my place in the queue like 18 months ago. They really should have come to market with something more polished.
@@DesignPrototypeTest your reply further indicates the truth of my and others responses. Yes, I'm old and wizened but I am an Incorporated Engineer within the Engineering Council with a lifetime of contributing to innovative work in real industries in both design and manufacture. Old, wizened and wise but still innovating!😎
@@Mike01Hu "as a qualified Engineer, I should be able to design a final product that meets all the criticisms made" - Able to? Sure. Should you have to? No. Almost none of his criticisms were even *valid*.
I try to watch your videos, I want to be able to see the results, but I can’t stand the obsessive complaining about everything and you go off on soapbox rants way too much. Put the thing together, use it, then after you have used it speak intelligently about what worked and what did not work in the design...
I find it very entertaining and that's all that matters!!
I can certainly see why this guy's videos might grate on some people for the reasons you describe. But it might be more due to your expectations rather than an error on the author's part.
Making good videos is not simple, and if you think otherwise I'd guess you really haven't tried it yet. I look at this author's videos as just following along with his experience, documented in a relatively raw form. I call it "catch and release", i.e. capture video and post the stuff, whatever it is. When the author explains some engineering "flaw", sometimes he's correct and other times his assumptions miss some major point and thus incorrect. As an experienced machinist and amateur mechanical engineer, my confidence in catching him in errors is very high. I, for one, don't let that bother me. He is publishing his experience kind of in real time, though with occasional re-thinks edited in. I'm certain any one of us would end up publishing somewhat similar experience with maybe a whole different set of discovered pros & cons as we went.
So maybe it would be less annoying for one to try watching this channel from a perspective of one author's imperfect experience rather than some polished, fully tested and researched product assessment, which lets face it would take an impossibly long amount of time for something you just intend to upload to TH-cam. Out of a thousand videos, probably one or two might approach completely accurate, absolutely truthful content, and that would only be possible if it's short. Take a more zen approach I guess. Only you control how you feel after some experience you have. You can watch the vid and take it for what it's worth, or you can expect more than was ever intended and be disappointed. It's not really up to the author to change his methods to suit the audience. It's more our responsibility to limit our fire and fury to the point of "meh", then let the rest go.
p.s. kinda cool to see one of these for real out in the wild. The quality and engineering the author expressed is no surprise to me to be honest, based on my experiences with e3d products. They are pretty OK, but nothing magical. To be the industry leader, you only have to be ONE STEP ahead of the competition I suppose.
@@TyroneDamShewlaces not expectactions, he's talking like he knows what he's talking about when he does not.
Pissing on this guy seems to be a hobby for some people including yourself.
I enjoy it, once a new rant begins i keep hoping he does one of those "future him" edits explaining how the rant was probably not justified just to resume back to the same rant.
Carbon fibre is cheaper than alloy? Folded sheet steel is better than machined alloy? Wow! You learn something every day.
You really have missed the point with the motion system, a point that E3D have stressed time and time again....The motion system IS NOT A CONSUMER PRINTER, ITS A TECHNOLOGY DEMONSTRATOR, the technology being the tool changer not the motion system! It is not meant for the average Joe, its for printer designers and industry experts to utilise as a development platform. With that in mind I suggest you rethink some of your criticisms. Other than that I really enjoyed your video.
So what you are saying is that a Hotend company made a Beta-Test level printer to sell to all of it's competitors so that they can develop competing hotends of their own? And yet this hotend company has no intention of selling the printer for profit? Are they trying to put themselves out of business?
@@DesignPrototypeTest Yes as the tool changer is the technology they are showcasing, not the printer, not the hot end but the tool changer itself. The aim being that other manufacturers will use the tool changer as an engineering standard in their designs. Please just watch the e3d live Q&A video from about a year ago, it's all discussed in there (fair warning, the sound quality is crap). Also, every single part of the toolchanger and motion system is open source, their competitors are free to copy it if they so desire.
puts out 3d printer review videos
same guy: " this is my first benchy"
SMH
So put a carbon crossbar that might bow just because mesh levelling could compensate for it??? worst engineering advice i have ever heard.
That's why you shouldn't let "designers" make decisions with engineering. If you talk / criticise about this shit you should study both industries...
carbon crossbar would bow?
It's engineered not to bow. It's directionally laminated then machined. It doesn't bow.
They rotated the fan mounting 45 degrees (not 90!) for serviceability, so you don't have to unscrew the fan to get to the the heat sink screws- yes it could have been done another way (clip, etc.) but before you go running off about what a "bad design" it is, IMO you should examine it under infrared, I'm pretty sure what you will find is that the big aluminum block you were complaining about conducts heat into the plate fast enough that where heat is removed from the plate locally makes very little difference. I also think that someone who holds themselves out as an industrial designer should account for these types of design issues before critiquing something they have no quantitative analysis on. Sometimes a part seems to make no sense, until you figure out a feature is determined by something you never considered, like workholding for a secondary operation in the machining process, which could also necessitate that big nub since they had to grab it by something when they cut those cooling fins.
You should stick to commenting on design and usability aspects and leave the engineering alone. In almost every instance your complaints are in error and your proposed solutions would be terrible.
Steel to Aluminum expansion is 2 to 1, steel to Carbon Fiber is 10 to 1.
Wait you're telling me lower numbers aren't ALWAYS better??
Before you make suggestions on how to fix an issue, you should step back and figure out if A) It is an issue at all and B) your suggestion doesn't contradict the complaints you had five minutes ago. You want them to drill and tap a shaft already installed in a tiny stepper motor to simply add a retainer to constrain a component in a direction it should never experience force in? Are you a designer or an engineer, that's my real question.
i watched it as far as i can because, i love the idea of the tool changer, but if you think that the engineering of almost every product E3D makes is bad, go and do better from scratch ! if it's made like this, there's a reason.
the peek standoffs from the bed are in the bed box, you will have to take the lower foam part off and find them there somewhere. it's a very small bag, so easy overlooked.
Hi, interesting video with interesting take on the design choices e3d made.
You know what would be more interesting? Implementing the changes you said you would like to see.
e3d has released the tool changer as a platform to build upon; not as a be all end all solution.
Looking forward to your response/video.
Cheers!
Watched this video because its the first time I've seen this model out in the wild. But wow... it was like watching someones dad rant for an hour. Cringe worthy, not binge worthy. Good luck with your channel.
@@joejia1410 I have to be an engineer and have an e3d tool changer to have an opinion about how a video was awful to watch? Get real.
@@joejia1410 The purpose of the video was to bore his audience? The problem isn't what he did with the printer. The problem was making me suffer watching him rant for an hour. He needs to learn a little about brevity. Its has been 10 months since I last watched it, and yet, this video still brings me pain.
@@joejia1410 The entire purpose of the video was to waffle as much as possible inside a variable time frame. Which from your comments I don't think you acknowledge that.
@@joejia1410 I understand what you're saying, but I'm saying his video would be better if he was more concise and if he didn't talk so much (about nothing). Kinda like you. Birds of a feather I guess.
Been running Titan Extruders on 3 different printers, and run them almost continously since installation. Have had ZERO problems due to the theoretically flawed use of the polished shaft as bearing for the arm.
Built my own version of this printer, except the tool changer. Footprint 50 by 50 cm. Print area 300x250x350. Used cheap chinese hiwin clones, and my benchy came out significantly better with zero ringing.
th-cam.com/video/rj0-pYkabD8/w-d-xo.html
The rattling is my belt tensioners on the back of the X carriage. The clone hiwin on my carbon bar (3 2x12mm carbon strips glued) is definately not top notch, and might contribute to the rattle. Despite this, the surface quality is vastly superior to the Black Widow neighbor. Controller is a MKS Gen L with LV8729’s.
Used a cheap 12mm ballscrew, dual hiwin on z.
The 5mm sheet used for top, bottom and bed (bed made from the cutout of the top and so was the part connecting the rail carriage on Y with the hiwin rail on X) was a gift. Extrusion bought frol Dold Mechatronik here in Europe. The rest is Ebay, Aliexpress or genuine E3D (E3D online supplied the genuine Gates Pulleys as well).
Man.....this is hard to watch yet I watched the whole video same as you decided to buy it yet your complaining all along.Nobody forced us to do the things that we did
I think this 3D printer appears to be a bargain when compared to something like the Ultimaker 3 for a keen hobbyist. Twice the number of nozzles, and no limitations or proprietary components required. It has much better hardware for printing with engineering materials. As soon as E3D add the functions like a tool to remove the print or add hardware like nuts this printer will be well worth it. It just needs a few early adopters to sort some solid g-code for heads other than nozzles. After that the sky's the limit and we'll all be able to get on the band wagon with the lucky few.
E3D are not going to be selling these printer, its basically just a beta demonstration set up for the e3d tool changer
11:10 WTF, I stopped watching at this point.
A 'Murican calling out a basic weight-saving cut pattern as a "prideful move" Lol. Just pure projection on his part.
Some of those machining decision might reflect that they are starting to experiment with casting rather than machining (their new Hermes extruder is all cast) and I'd guess a lot of the holes are to reduce weight - we Brits don't do national pride in the flag so much- having said that I agree it seems bizarrely over/under engineered in places.
It's clear that they didn't care about the money. That amount of machining work is usually only done for one-off, highly specialised machines... But as you said: it's a huge breath of fresh air in the 3d printing space!
That ringing issue is quite interesting though. The heavy extruder assembly probably plays a big role but I'm sure that the core-xy system adds to that problem due to the crazy long belt runs. They really should have used either a more heavy-duty belt family or a wider belt if they wanted to stay in the Gates Powergrip family.
One thing I noticed is that the motors are really loud! Is that a result of all the machined metal parts conducting the sound to the body of the printer which in turn amplifies it?
Now that you mention it, the motors are too loud. The loudest I've heard from Nema17 Steppers being run by Trinamic drivers. I think you are spot on: The all metal mounting to the single piece aluminum top plate connected to the bottom plate by aluminum extrusions makes a very resonant frame that serves to amplify the stepper motor noise. This printer is probably a good candidate for vibration dampeners.
@@_Richard_F___ Maybe the microstepping interpolation is turned off. There are good reasons to do that, but in this case it might make sense to turn it on.
@@evropapagan5551 Well a direct replacement is going to be difficult since you will have to use different pulleys. I would take a look at the HTD belts or the Gates GT3 ones. A wider GT2 would also be an upgrade. AFAIK they also sell them with 9mm and 12mm width. Most importantly you should go with a reputable brand and make sure that its fibreglass or at least aramide reinforced.
First up, I subscribe and enjoy watching your videos for the critical takes, and introducing me to good new tech ideas especially US based. However sometimes the criticism gets a bit abrasive and you often state that something is flat out bad because it looks wrong to you on the face of it - and you really slate something without giving any indication you've tested it yourself. In particular, you seem to have a bit of a misconception about the Titan extruder and its tensioning arm - which is indeed made of plastic and running directly on the motor shaft. This does look quite questionable - but it's addressed in some of the earliest descriptions of the product, and it's made possible by using a particularly well adapted plastic formulation. In my business I've put well over 10, 000 hours on Titan extruders (including several well over 2,000 hours) without ever finding one deformed even slightly! That's even running on D-shaped shafts! And if they wore out, a replacement can be bought on its own. In contrast you seem to be saying some Chinese clones look better because they move the pivot point. They only need to do this because they don't use the same plastic- and have their own failure modes. I'm not a fanboy of any brand, but have met the E3D team many times over several years and it's on exactly these details that they've built their brand, so it's a real shame given your other views about the value of R&D, that you'd hand a win to clones which often come with spare levers, they're so likely to wear out! I notice several times in the video you correct yourself, and I found the rest of the toolchanger video very interesting, that just stuck out as lacking the evidence to back up such a strong negative position. How are you finding the Titans working out so far? Would be very interested to hear your take after some time living with them.
How did you manage to miss the point of what E3D are doing with this? Its almost like you had no clue at all what you were buying?
Even then it's company's fault. He shouldn't have been allowed to purchase this printer without signing legal papers which make it clear that he understood the point of this printer. He managed to buy it as an average Joe and you are telling him this printer isn't for average Joe. E3D as we know makes hotend for average Joe only, it's not wrong to assume that one of their printer might as well be for him
@@AS-ug2vq I mean Prusa makes printers for the Average Joe, but you can go through the same step to get printers for the reason of Firmware Testing..... As far as I was aware it was always shown as a prototyping idea from the moment it was made, and still is..... in fact even the form you have to sign up to obtain one of these screams early adoption... He acts like this is the first ever non-mass produced Kit he has ever put together.
After watching this video I've realised that the guy complaining about one of the most iconic tool changer printer doesn't even have 8mm smooth rods and this guy is crying about a printer which is boosting his productivity and quality of prototyping.Atleast appreciate the effort E3D put in to create a new manufacturing standard.
Thank you for expressing your misgivings on the designs you come across. Even if I don't agree with all of it, I respect it. BTW. I usually set up my machines expressly with volcano hotends. Mainly because my machines are relatively large. That being said, I get very tight smaller prints with volcano blocks and nozzles with nozzle bores are small as 0.25 mm, and 0.4mm. This is great for me since I can simply change a nozzle. I always encourage using the largest nozzle you can get away with, and stick with low layer heights (0.12-0.15 mm layer heights). It depends on the end desire. I will say I differ on opinion of print quality suffering with volcano vs std V6 nozzles/blocks. That has not been my experience at all. I think it's armchair subjection. Obviously, there's a theoretical advantage with one over the other, but in practice, I don't find Volcano for fins delicate prints a disadvantage. Perhaps it my ability to have a surplus of part cooling, which I can turn down. I did buy a titan, and never installed it. I disliked the elastic properties of the lever arm on it. Also, I love my bowdens. Easier to service the hotends. Decent tubing is the key to reliable prints. Capricorn lasts practically forever, compared to generic white PTFE tubing. Thanks for the video! :)
I could use some help. I just bought a Toolchanger and need to make the duet sd card files. Do I have to make one myself or does e3d have the files I can just drop into an sd card and pop into my Toolchanger? I could use some help please. Thank you
Ouch...
I did watch an interview with E3d and it was clear that this product was intended as a demonstrator and would be over engineered with the intention. Actually they withheld some features and scaled back... the prototype had a different Z motion which was over kill but I liked it.
The tool charger is the future of multi material printing and address the majority of multi nozzle and multi material single nozzle issues.
Do you know what stepper motor they are using for the tool head?
The reason the price dropped is that the law on the UK is that prices are always presented as including VAT (a sales tax) and you ceased to be liable for VAT when you got to payment as you aren't in the UK. Also bear in mind British engineering usually focused on quality and reliability not cost
*Cough* Lotus *Cough* Lucas *Cough*
From what I understand that system isn't meant to be a commercial product but rather a reference implementation on top of which toolheads can be developed and tested. For example, you mentioned the design of the e3dv6 tool and how it only had part cooling in one vector; that is what this system is for -- engineers/designers/architects to identify potential tools they can produce for the consumer market. Then when product owners down the line want to make a consumer targeted system, they have a community of tools that the consumer can choose from to work with the product. Think of the motion system, the tools, etc as the original xbox devkit. A big expensive pc tower that was never meant to be sold to consumers, but rather to developers as a reference for creating games.
So what you are saying is that a Hotend company made a Beta-Test level printer to sell to all of it's competitors so that they can develop competing hotends of their own? And yet this hotend company has no intention of selling the printer for profit? Are they trying to put themselves out of business?
Maybe I'm framing this wrong -- it's not that they are making a beta printer so that when they get the engineering right on the motion platform, specific extruder motor/bowden system, etc they can package it up as, "e3d toolchanging printer v2". Nor do I think they are specifically trying to encourage competitors to create hot-ends to put themselves out of business. They may be selling the kit for profit, maybe not, but I don't think the motion system matters as far as sales are concerned. What I believe they are trying to do is sell specifically the toolchanging system and/or promote the system within the community as a whole. From my point of view it is this: to sell toolchangers they need customer demand, to get that demand they need printer manufactures to adopter their system, to get manufactures to adopt the system they need tools to go on those changers, to get tools on those changers they need to community to develop tools (like you rightly pointed out with their reference v6 tool, bad design, but that's not their prerogative, another developer can and should make a better one), to get developers to create tools they need a reference to work against. This kit is that reference. Maybe they plan on selling the whole kit to consumers, but that seems insane for them to suddenly want to get into the printer selling game. They would be eating themselves out from under themselves.
Thoughts on the CF vs. aluminum for the cross bar. Even though the difference in expansion is the same, it's quite possible whatever fixtures you use in the CF will try to rip out and slowly loosen over time. I'm guessing to make the CF strong enough to hold the inserts it would end up too big.
Your excessive negative comments and "I could have done this better" attitude are a tremendous turn-off in this video. The signal to noise ratio is very low in this one. Rather than show several minutes of incorrect complaints and then a few more of retraction, you probably should have just cut out all the misinformation in the first place. I'm not feeling inspired to watch any more of your videos.
I agree. I thought it was over at 41:05 but I was wrong.
That is this guys attitude on every video he does. He can "do it better", or he can "improve it". He makes himself look like a dumbass. If he is so much smarter and better than everyone why isn't he making and selling his designs or projects?
@@ASSOpid because it costs a lot of money that will most likely be wasted to dive into an already saturated market. The design flaws listed were not without merit, engineers aren't perfect and sometimes are pushed to a deadline which leaves imperfections.
@@rhadiem so you are telling me if I've to criticize a movie, I must be a director or an artist on my own first? Anyone can tell with some thinking what's wrong in a design when it's so obvious and makes their life difficult and could be easily solved.
Oh no this video didn't turn you on??
So a little constructive criticism, some of things mentioned may be over done as far as the main base of the machine goes, however, I would rather have a more solid foundation to build off of. If I remember correctly this is also more other attachments other than just printing so more rigidity is better. As far as the machining of the crossbar goes you can optimize those toolpaths to go much faster than you lead people to believe. Most of these aluminum components are not very thick and depending on corner radius could almost do in one depth of cut, especially if using the proper high helical aluminum coated endmills and for reference we do these kind of cuts daily in the shop I work in. Also as to your comments on gluing the gear on the motor, there isn't anything wrong with it. Hard to tell how big it is but it is no fun trying to drill and tap those small threads, let alone try and hold the shaft from rotating, also not sure how hard the shaft is, if its soft then sure could do it but it its even made from half hard type material you introduce more chance of failure. To give you and idea is we have components that are glued in a similar fashion on our high speed stamping dies that are at a cost of 500,00 running with virtually no clearance and those accomplish millions of hits without movement. Of course the parts need to be cleaned before gluing. Some of the points brought up could have validity, however this is complaints on cost of motion system, some of the things brought up would only hinder a price drop. I would rather there be too detailed instructions that not enough as many things are these days, not everyone is at the same capabilities so it would be more of a benefit. Anyway just a few comments from someone who makes machined machine components daily.
A good comment and a thumbs up. The Instructions were both insultingly specific and then completely absent when they omitted the entire section about where to connect the wires to the Duet board and the AC plug/switch. A stamped/folded triangular (Yes, I said C channel in the video) steel cross bar would cost far less than the CNC'd aluminum one. It would be just as strong and stiff, and would result in no difference in thermal expansion coefficients. The original Carbon Fiber cross bar they raved about would also be far less expensive than the CNC'd one. I see absolutely no reason for the part they gave me except to charge me more money, and keep their CNC guy employed. This machine is a 3D printer. It's not a CNC router. Even with the expensive cross bar it is not stiff enough to withstand the forces of CNC cutting. It's not even stiff enough to resist ghosting/ringing. How's it going to resist CNC chatter? Instead of trying to increase stiffness they should have reduced the weight of all the moving components.
The original reason for the 3:1 reduction on the Titan is so a lower mass stepper motor could be used. While not necessary for your application the reality is that this also helps to remove surface artifacts from the final print. These are most apparent with direct drive extruders using 1.8 degree steppers. You can cut the amplitude of the artifacts in half by going to a 0.9 degree stepper motor but they can still be seen. The addition of a 3:1 reduction makes them go away as the geometry is smaller than can be perceived. Using a Bowden tube introduces enough feed slop that you cant print as fine of detail and the extruder induced artifacts are masked. These artifacts come from the non-linearity of the microsteps. Full steps even on the more expensive Moons and Lin engineering motors have a rated error of 5% and the micro step error is in addition to this. The 3:1 reduction ratio reduces this error by a factor of 3. You complain about the inclusion of the Titan but this is currently the least expensive extruder E3D sells and it is an exceptional product. Should they have sourced an extruder from another company?
I expect that the next iteration will use the Hermes as a direct drive extruder. I am a little surprised that they didn't do a direct drive using the Titan Aero.
We tend to criticize most those products that we like the most. This is because we wish they were and could have been better and we feel let down by every minor issue.
Thanks for the Video! I did enjoy it.
does it have a lead screw or ball screw for z axis?
for your fans still work after change the tool put in cura ----> Extrusion Setup----> end code , this command
M107
that will force the fans to stop spins
22:12 4-point leveling for the bed? Wouldn't it be better to have 3-point leveling as 4-point leveling often results in bending of the bed?
@Kenny Eaton interesting that it's only mesh leveling.
I can't seem to find a third follow up video for this. Is there a third video showing the multi material printing?
I feel the Titan extruders are used simply because it's one of the few extruders that they sell. They make everything in house (except the duet boards) so them using their already designed stuff makes sense.
A small note about HT-PLA in combination with other material is that it will not stick to co-polyesters or TPU. This information will make this printer so much mor fun. Because i do multiple material prints with ultimakers daily. and to use HT- PLA and TPU to make anti mar protection. also PETG or PETG CF to reinforce TPU prints for stiff supports hooks etc. I would like to test this printer just to be able to use mor than two materials. it just need an enclosure or heated chamber.
You really shouldn't expect auto bed leveling to compensate for a bent rail.
uhh also for the bowing. it's only a tilt. maybe screw down the 2 left screws more?
The nice thing with you being sometimes an a$$ is your criticisms can become valuable positively 💝
it depends of the steel, chrome & nickel are not in the same proportion in various type of steels hence it will not be the same as "pur" steel.
For exemple, Igus use Stanless Steel 1.4571 on their linear rails and its thermal coefficient is 16.8 (hence closer to 20 than to 0)
27:54 All of these direct drive Titan extruder issues are another reason to look forward to the upcoming Hermes extruder when looking at direct drive for flexible filaments like TPU. (oh look 30:44 you mention it)
We use super glue to fix small timing pulleys onto shafts of small high velocity servo motors. Holds great as long as it doesn't review any sharp impacts (almost impossible with epdm timing belts) it's easier to remove than race retainer too since you can just give it a sharp POP with something semi rigid and don't have to heat it up.
TH-cam recommended videos are getting crazy! :P
I may be wrong, but I remember hearing that the heated chamber patent was for a heated chamber that had the electronics outside of the heated chamber, idk, there could be a different patent as well. I love your videos too, I didn't really like you ripping on prusa, but you still make good videos and I think we need to hear from everyone in the community and all ideas. Keep it up!
Doesn't nozzle wipe sort out the kraken ooze problem?
36:02 I wish the mosquito hot end was more competitively priced, I've had my eye on it for a while but I'm not ready to drop the cash for it.
I have the chimera hot end you were talking about. I put aerogel insulation between mine.
MPCNC has tool changing that's in a rougher state than this is, but it is also much more affordable. I believe it's because of this E3D project.
So jealous. But I have to say their titan extruders are known to be pretty crappy. The Bondtech BMG is much better in my opinion. If I had that tool changer, I would have used BMG Bondtech extruders, and Mosquitos. In fact, he couldn’t you have direct drive BMG’s mounted on a Mosquito to the tool changer plates?
I am a huge believer in the 3:1 Bondtech BMG extruders. The gearing reduces noise from the stepper. It does improve resolution.
It would be interesting to see you put some of your improvement ideas into the creation of new parts for this printer.
He's never said what he would do, only what they should've done. Doesn't sound like something he's interested in doing.
I see that artifact on side of Benchy. I assume you sliced w Cura? All my Benchies that sliced w Cura have same artifact regardless of setting, rotation, etc.
Yea but your missing one critical aspect in your logic. You forgot to consider the metals thermal inductance. Steel has a far higher degree than aluminium, ie; steel absorbs thermal irradiance than aluminium. Ceramic is a good example of a material with extreme reluctance to absorb, and transmit, thermal irradiance. And CF is only strong along the axis of the strands, so if its a weave, the tensile strength is disproportionate and a metallic ‘backbone’ compound can provide the additional strength characteristics the CF lacks. (Unless it is made from matted CF strands.)
Glue is how they put car frames together. The most famous glued frames are the Lotus sports car frames. Lotus uses an extruded aluminum frame. Attaching together the extrusions with glue is stronger the welding or bolting. Regular unibody cars get a lot of glue.
from wiki.e3d-online.com:
"FAQ
Wear on Idler
The idlers are made from Delrin 500CL which is an acetal homopolymer with impregnated chemical lubricant. This resin is designed specifically for low wear and friction against metals. This idler runs plain against a ground steel motor shaft which is very smooth causing absolutely minimal wear. If you have a D-shaped shaft there is a small possibility that a bur is present on one of the edges - this could cause issues in the long-term and so if found should be removed."
other than that it's made out of acetal so you don't have to worry. it's like a bushing. it's even used as bushing in the xy or trapezoidal nuts
I dont understand the thumbs down neither the negative commenters here. Does every video has to be "the best [insert product]"?
He just complains about some valid points and even says he is a big fan after all.
The extra torque of the titans helps power through high frequency retraction by overcoming friction in the heat break as well as reducing clogging just by forcing problematic particles through. I used to have a titan and it was better than the old 1:1 extruder because it was less susceptible to clogging. I now run a Zesty Nimble with a 30:1 ratio and it clogs less than the titan, the more torque the better as long as your not breaking stuff.
This is a fair evaluation of of what is a high end product, but it is huge overkill if you are only going to use this system for multi material/colour printing. This is a CNC machine that can also 3d print or mill or laser cut/engrave parts in a single process. Is it over engineered, definitely, but this isn’t really for home use for printing flexi toys. This is a true fast prototype machine that allows designers to develop their products. Now as of today you have several alternatives that can do multi material/colour print but I haven’t seen another product that has the full capabilities of this machine is capable of doing at this price point. Prusa XL is now out at a huge cost but you also have the bamboo labs printer at 1/3rd of the cost of the prusa. Interested in your long term experience of this machine.
A lip on the end of your spool holder to stop roll falling off, do you really have to print all these parts, doesnt e3d supply them?
There is retaining adhesive for shaft/bearing applications, and there's nothing wrong with that. I do agree with you that telling you to superglue the gear is a little ghetto. E3D could have provided the retaining compound (Loctite 680).
For Drone racing we most off the time use flexible filament like NinjaTek Cheetah.
I use Trinus (Panowin F1) 3d printer. (acme lead screws with spring preload nut)
I use Flexion Extruder is is the best.
I have my own design level bed with a glass plate and use glue stick.
I don't have any artifact in my print.
1. I have be looking for a bigger printer but I cant find anyone that is up to my standards.
2. I want direct drive only.
3. acme lead screws with spring preload nut. NO BELT on my machines my Trinus have thousands off hours off printing and have same accuracy as my CNC mill with ball screws.
4. any linear rails will do.
5. print multi color (tool change) can be a manual tool changer if you do like 4 colors stooping prints and manually changing tool is something I can live with.
Closes 3d printer I have found is "Dobot DB-MZ003 3dprinter mooz" but it is still to small I need X 130 , Y 180, Z 130 so just slightly bigger than my
Trinus.
This is what a reviewer is supposed to do, give his honest opinions, and they are just that, opinions. I'd much rather watch a review like this that points out all of the experiences you faced while building rather than some fanboy review blowing sunshine up the manufacturers a$$. Thanks, I've been waiting to see this one.
@Kenny Eaton What is it that I'm misinformed on or that I don't understand? These are HIS opinions, not mine, and opinions are subjective by definition.
@Kenny Eaton Sorry then. You replied to me using "you" in your reply so I assumed you meant me. My original comment still holds, he expressed his opinions on his thoughts and experiences while still praising the machine. Was he nit-picky, yeah a bit, but those are his initial thoughts. I personally think it's a marvelous machine, pricey, but great innovation.
I've been watching review videos for years on various types of products and I prefer the nit-picky ones over the infomercial types because I can at least make my own opinion on whether those things matter to me. But that's just my opinion. :)
Have a great day
I have been using a Chimera on and off, having lots of issues due to heat creep. Based on your comments about the poor design, you inspired me to design a new mount that blows air around the whole thing. Essentially have it in a tube with a 40mm fan blowing in it and then another 40mm fan pulling the air out with a hole cut in the bottom for the hotend to stick out. So far, no more heat creep.
It's unreal that the king of engineering in the 3D printer space still sells such a garbage product. They should be ashamed.
Sorry slightly confused did you have to print parts to put the printer together?
Yes.
@@DesignPrototypeTest Wow! Is that common? I am trying to get into 3d printing trying to figure out what printer to get. I would of been pretty salty if I had to print parts out to be able to build a printer. I defiantly appreciate this video. Good on seeing you on "B is for Build" by the way. I was like hey I know that guy!
@@speck3096 At this moment in time the best intro 3D printer to get is an Ender 2. They are hard to find, but you can get it from the Creality website for $99 (shipping?). There is no better bang for your buck to decide if this hobby is for you. If you are going to spend ~$175 go with an Ender 3. With either of these printers the no. 1 thing you need to do is the hotend fix by "onebadmarine" on thingiverse. Next, add split cooling. The petsfang is popular on thingiverse. My geometry is better. Here is my playlist about the Ender 3: th-cam.com/play/PLtVk4dZInT80SCVB_Pgrn1zZThO3nmV7B.html
@@DesignPrototypeTest Thanks so much. I watched your Ender 3 videos a few weeks back. It looked like a winner. I appreciate the information and the time you took out to reply.
Thermal expansion problems between steel and carbon fiber / other composites are well documented. A steel-aluminum interface is not ideal either, but it is in fact substantially better. The added cost is an unfortunate side effect. Your point about using steel instead of aluminum is however quite valid, and since steel has a much higher modulus of elasticity than aluminum it should be fairly trivial to get a stiffer structure while maintaining a similar mass.
Not so sure of that. the weight penalty of steel is far greater than aluminium, and IF this is intended for mass production down the line, cncing steel (assuming stainless...i mean the other non coated options will look bad) vs aluminium is night and day in terms of speed of manufacture and tool wear..
The stratasys patent its about air tigth chamber, there is a lot ot companys making printer with heating chambers, simply their chambers are not air tight, and that the ways you jump over the patent
To install a new tool; I'd attach its bracket to the hot-end while on the carriage, position it to where you tell it where it will be, and then clamp the bracket to the frame.
Regarding the over-engineered gantry => mechanical alignment always always always before electrical. The electrical is the measurement, the mechanical is the over engineered product to get things "roughly" in position. "Roughly" should have pretty good precision and accuracy in this area. Sure, the bed compensation measurent (the secondary electrical/electronic alignment) would probably do fine, but the more not-perpendicular to the bed, the more uneven flow will happen. I'd want the closest to perfection mechanical alignment, as possible, before the electrical/electronic alignment.
As you mentioned, thermal expansion against the linear rail running parallel is not good. But thermal expansion against the perpendicular linear rails its attached is much worse. Your right in stamping steel for a cross beam would significantly reduce vibration. Funny E3D talks about kinematic couplings but doesn't seem to be able to apply those fundamental principles to the x and y axis. Glad someone is actually taking a look at this machine who's willing to talk about its flaws.
Stamping steel or folding steel sheet is not as precise as machining aluminium and will be a lot heavier, moving mass is important.
I want this printer so bad!!!! Not only can you use print heads but you could use other type heads as well. The crossbar is a very cool part of the machine to me. One in decreases the weight without decreasing the strength.
In terms of the aluminum vs carbon fiber, what youre not addressing is the fact that the aluminum will act like a giant heat sync and evenly distribute the heat over time which will creep into the steel. So what will happened in with the aluminum is that it will maintain a low thermal difference between the steel\aluminum. The carbon fiber is acting more like an insulator than a conductor, so the steel will drastically change in relation to the carbon fiber which is what leads to so much tension accumulating in the part.
When I used plastic brackets for my bowden extruder, the heat would stay within the motor\extruder. When I switched to a steel extruder bracket, I immediately noticed that heat transfered to the aluminum extrusions they were mounted to and the motor cooled down significantly over the long print times.
Just something to consider. Numbers make sense until you start factoring in thermal conductivity.
The bed leveling as it is, is a problem. The bar still appears to bow in the middle, and the leveling is being performed w/o a head loaded. Your leveling w/o a head shows the bowing problem. With a head loaded, the bowing in the middle will increase. The bar should be something like a cross bar, but the leveling test also needs to test each head of a different weight. Since the heads you are using should all be of equal weight, you can probably get by with only 1 head loaded.
You going to ERRF?
So many negative comments. You guys gonna keep in mind that hes entitled to his own opinion! All the negative comments should be made as positive critisism. If you don't like the content just stop watching.
Was just sitting here wondering if I was imagining the whole thoughtless vitriolic vibe from this video and then the UK flag rant happened...
Lol yeah I stopped watching at that point, it just sounded so inane.
well,
1st of all, that was an almost angry diatribe that you had there for the UK flag floor which you then said that it may have been done because of the patent. so, why didn't you take out the remarks about how they shouldn't have done it and just kept in the patent stuff?
secondly, i believe that E3D SHOULD have created a way to seal all 4 sides as an option. this way they get around the patent and also offer the consumer the ability to create an enclosure (mo' money for E3D and happy consumer that want's a heated enclosure.)
keep up the great work - i'm watching them all and enjoying learning from them.
Russ from Ocala, Florida, USA
CTE difference problem has little to do with the delta and more to do with the ratio, length and difference from zero. So the steel to carbon is something like 10x worse than the AL to steel. The long length makes the problem worse. What "worse" means can be quantified to determine if it is a fundamental problem, I assujme e3d did that math.
17:13 Not just 3d printed geometry, but they really should be doing computational fluid dynamics simulation to evaluate the design's airflow and heat transfer effectiveness. Then verifying that CFD simulation with validation tests for the designs.
I think the upcoming Hermes hotend makes a lot more sense
@@nipunagunarathne4882 definitely more sense than titan. Still has some of the same potential issues with one sided cooling, but far better design with actual hot wire anemometer testing of the design airflow.
LOL! They didn't cut the Union Jack into the floor. They were removing weight from the plate, while leaving the structural lines intact. (Same with the cutouts on the gantry underside)
Structural engineering: Love your triangles.
I would agree with you. Kudos to E3D for taking on the challenge of being the first to build a tool changer. And yes, still lots of room for improvements. But hey, leaves them room for a TC V2, right?
Where can I get that hoodie....
I'm pretty sure I read on e3d's site that the problem with the cross bar was a stiffness problem. They indicated that the carbon bar allowed too much flex and the aluminum was much more rigid. The expansion/warpage wasn't even mentioned there. Curious.
This seems strange to me. The Railcore is larger than this printer and it uses the linear motion rail without any supporting cross member under it. The Rail is stiff enough all by itself for that printer. Why is it different for this printer?
@@DesignPrototypeTest Well the only reason I can think of is that typically these rails have all those holes so they can be rigidly mounted to some base with mass and a precise flat plane to correct any natural bend that the rail might have, which it might NOT have. As a career machinist, I can verify that slender hunks of steel sometimes indeed are not as straight as one might want or need, but sometimes not too. For 3D printing, some measure of bend in the rail might not be likely enough to be significant (like .002" at worst I'd guess). I've never tested linear rails (let alone several) for flatness so I have no data to opine either way. But you are correct that the rail could very likely be enough to support itself. Not only that, but the little aluminum OR carbon fiber underneath may just flex to match the rail rather than the other way around. If that's the case, then there's yet another example of half-baked, untested design. And of course, the additional error of purposefully building the rail to be a thermostat arm with dissimilar materials makes it an even worser idea.
Not intending to pile on e3d or anything, just adding more possible valid "if"s I guess.
Just had another thought. The other reason these rails are bolted to a more massive base is simply to make it more rigid to suit, say, a milling machine or router type of thing. Thus the purpose of the support is to beef up rigidity to suit the mechanics while the rail takes only the role of guiding the linear motion. Of course 3D printers have extremely small tool pressure, so the rigidity only has to be enough to resist the forces of its own mass moving around and changing direction, etc. So for this case, it should require very little additional support. It would make more sense to choose appropriately large rail so that it contains enough built-in rigidity to resist vibration due to its own mass in motion.
Well, it's about time you printed a Benchy! Only took, what, 3 years and a $3500 printer? J/K!
Can you imagine him doing a review of a Maclaren P1? "And you are charging thousands for this ludicrous gold foil insulating the engine bay, and spending all this time 'beautifully' TIG welding the exhaust manifold by hand rather than just sand casting it and covering it in cheap, reflective heat wrap."
I personally am not so super hot on the tool changer for logical reasons. There are GOOD reasons to prefer IDEX to a tool changer for 3d printers. Mostly - 2 independent heads. MOST people will use multiple tools to print support material. This is nice, and a tool changer does that. A cheaper IDEX design, though, allows one to use the same PLA on both heads - and use duplication mode to do multiple copes at the SAME TIME. This double speed at need is a flexibility you do NOT get when using a tool changer, AND the tool changer is more expensive. Now, granted - the tool changer gives you more flexibility, but in most cases - those may not be wanted.
Tough review but great content, thank you for this!!!
i think you missed a lot of points. 1st the machine (as stated in one of the videos ) is a kind of cnc porn as reference machine. So it is for sure over engineered as z motor mount z axis and bed. The X axis i think is well done for the task. so as an reference design it is an starting point for machine designers and enthusiasts who do and change the design but the locking mechanism is to be an standard and work swell. 1) Endstop i was using also mechanic endstops but found that when you use filament sensors you need the pins so i went back to switchless mode and it works since a week every day printing flawless 2) Aero design please read 1st and 2nd thermodynamic law and make an test with FLIR camera and you see 3) titan design i use titan s on dayli base and they are designed with less parts in mind easy serviceable and KISS so does you could out in more parts which might fail but get and bontech instead 4) Weight on toolhead i agree but it is a reference design and works i do now a mosquito design where i try to remove weight which is tricky if you try this you will now what i mean. do less material but dont have ringing 5) your bed maybe release the screws and tighten them diagonal might help normally it bends other way around 6) i now work on an BLV based version of that design lets see which price is possible 6) Duet is different than marlin world
but nice video i liked it
PVA is basically wood glue.
Hot melt glue is a Ethylene-vinyl acetate/terpene-phenol resin blend and is NOT water soluble. :)
I have to agree with Greg with respect to the use of carbon parts. I designed and produced some carbon parts. The production of carbon parts incorporates a lot of man-hours, much more expensive than machine hours. It is also easier to make straight and flat aluminium parts than it is to make flat carbon parts with the same precision.
At some point you mention the heated build chamber. Carbon fiber parts need special resin to be able to withstand these high temperatures, most resins will become slightly flexible at higher temperatures. High temp resins are more difficult to work with, need higher temperatures during the curing phase and are more expensive so that would make the parts even more expensive.
As an engineer I love to glue the sprocket on the stepper motor. But instead of using superglue, I tend to use Loctite 638. This stuff has a bonding power and is used even for gluing cooling tubes into car engine blocks and it can withstand high temperatures (up to 150°C) and vibration without any problem. Using the proper glue will give you better service and lifetime compared to a tiny screw in the axle of the stepper motor.
I think E3D did a good job in getting us a nice range of extruders, hot-ends and other stuff (including this printer and the tool changer).
Personally I do not like this printer design, I have designed and built something similar a few years ago. Still using it but I don't like how the light weight frame vibrates and resonates while printing. But that was a trade off I made between stability and portability. My new design includes a special pedestal so it can be lifted with a small fork lift - not something most home users will appreciate :-D
Even with all this said, I like this video. As long as I remember that a saying like "this is crap" means "I really don't like this" there is nothing wrong with the content.
As always - my comments are my personal opinion.
Any plans to continue the E3D tool changer videos?
I have plans. I don't know if they will ever materialize. It's a shame to have a $3,000 printer just sitting on my shelf. We'll see. Thanks for the comment.
Many thanks for this in-depth video.
you got me laughing and also chrining at the flag part lol! BUT I don't think its the patent (ultimaker and many other brands have enclosed printers with heat chambers). maybe they used it for parts / like the top of the frame used for the bed. the bottom plate doesn't get weaker by doing the "UK Flag lol". But $1500 for this frame including linear rails is not expensive. If they used forged aluminum sheets it's even better for the price tag.
For the tools changer, servo's its indeed cheaply done... did not expect that while they easily can put a grub screw on the side of the gear to lock it... And for the Titan Extruders I guess it's time for BMG's.
The Supervolcano is really cool btw... we use them on delta printers of the size of a shipping container and we print with them on 200mms (1.4mm nozzle) we tried 300 it also works but quality is getting lower and the factory floor is resonating too lol!
And yes Slice Engineering is damn awesome (even the clones seem great) simple and functional... I think slice and e3d could be great competitors. and there is where innovation starts.
I hope to see a new V7 or something or slice might grab my interest. I mean... those nozzles are insane and the hotend is compact and cool looking.
(p.s. your are not allowed to show your youtube income. it's a TOS, they can demonetize the channel for this.)
Why do you avoid printing the benchy?
The design is cartoonish/silly. It doesn't actually float. There are better torture tests to show how a machine performs.
@@DesignPrototypeTest I want to say thanks for making these videos and keep up the good work. I'm in queue for a E3D toolchanger and this will be a big help once it arrives. It's refreshing to get the critical perspective you offer.
"Why is this part CNCed to it should be laser cut" NO! thats how you drive up price. Lasers are expensive and burn out relatively quick compared to other processes. That cost is shifted to the buyer. Plasma cutting or sheet metal stamping is what they should go with... gravity molding to save a few steps might be a route they could go to.
(Side note: that pattern on the bottom is not supposed to be a flag its designed that way to reduce the cost of metal and still keep its strength)
Why not just but an ultimaker 3?