INTRODUCING: This Metal Geared Combi-knockoff Extruder
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- เผยแพร่เมื่อ 4 เม.ย. 2022
- Sold by a company called SANCreality I think I will call it the BMGsquito. It's got all of the features that I've been begging for in an extruder and more! This promises to be good! Let's do a review and see if it lives up to it?
See all of my extruder reviews: • Extruder Reviews
Patreon: / designprototypetest - วิทยาศาสตร์และเทคโนโลยี
Mechanical engineer here. POM or HT-PA gears make the extruder MORE wear resistant and thats why everyone uses them.
Metal on metal contact will always wear stuff down, so we developed two ways of dealing with it.
The first is hardened surfaces, so either straight up hardening via heat treatment, nitriding or any other of the many ways to harden a surface. If both mating surfaces are really hard, the slightest bit of lubricant will be enough to make the system durable. However, this requires manufacturing precision on many levels and is thus reserved for expensive parts.
The other way is introducing a softer gear, like copper, cast iron (often used for really large gears) or plastics. Way cheaper and, critically, able to conform to the inaccuracies of the steel mating gear without taking damage. These parts deform BY DESIGN to better mesh with their mating gear und after a break-in, they don't really wear for a long time. The problem of binding gears is pretty easily prevented if they are manufactured with some precision. Also, they are self-lubricating and have way lower surface friction than steel on steel, thus lowering the amount of lubricant that's required in the first place.
Most POM blends have a maximum continuous working temperature of ~100°C, so using them in your max 110°C chamber is no big deal. You'll replace the extruder for a newer design before they wear out too much.
Bondtech uses a very specialized blend for their plastic gears in the LGX (the first batches used POM, but they switched) which is able to be used continuously at even higher temperatures.
In that case, I’d be interested to see DPT push it to failure, instead of searching for metal gears, which are heavier and more expensive…assuming POM doesn’t decompose to toxic, flammable formaldehyde gas at such modest temperatures. A quick search shows a decomposition temperature of 150-240C.
@@AwestrikeFearofGods true. 100°C is totally safe, even for extended use
Came here to say the same thing thanks for saving me time good sir :D
Metal gears also add noise , and 3D printing is a visual representation of harmonics in the driven systems .
So you’ll probably get visual artifacts , like making a record
the silicone insulates the motor from the hotend......
That silicone spacer is supposed to thermally insulate stepper motor and reduce the heat transfer to the extruder body and to filament. Not a decoupler nor a suspension.
The gear spacer also acts as a heat buffer between the gear and the extruder. I think it is very interesting. Thanks for the great content!
It defenitely is, the hemera is missing this and thus is essentially heating the heatbreak with the motor, what a horrible extruder.
what an excellent video! so glad you have been continuing in this series. and well may i say it has been really helpful and educational. may i also say that if you were not already watching VeZ" channel he has an excellent all metal 3d printer carriage for sale now. it costs something around 100 euros but is pretty nice and well thought out product as a general mounting solution
as for these chinese metal extruders. i cannot help but wonder how much further weight reduction is possible by drilling extra holes and filing away parts of the chassis structure... but maybe if it is all sintered then it might be brittle and prone to cracking and get damaged?
What if you just drilled the holes in the hotend to reduce the thickness of the insulation layer for fit and heat transfer? I'm not advocating buying rip off equipment but if you already have one it should be easily salvageable.
Nice little review bud, I still like the BIQU H2 V2, its my go too, I have an LGX Lite with a Dragon HF, and I still prefer the BIQU H2, its small, fairly light weight and very reliable, and I never get heat creep, my only issues is the noisy clicks it makes on retraction. But for $60, this knock-off for great value extruder for a bed slinger like the E3 and similar, just install a plated copper nozzle, should fix the heat transfer issue. The heater block will be nickel plated copper, just like everyone else, run a drill bit through the heater cartridge slot and use some copper based grease as heat transfer compound.
Informative review with evidence to backup your statements.... Just keep telling it like it is and ignore the haters and fanboys. I have more respect for you than most TH-camrs and your non sugar coated approach to things. It's apparent your passion for the hobby and desire to inform. Several large popular well respected in general channels trigger my BS meter on a regular basis. To much manufacture influence. Anyway don't ever change and keep fighting the good fight.
"...and keep fighting the good fight." Stay tuned ;)
@@DesignPrototypeTest Look forward to it.
The heater block on the knock off also has a significant amount of mass where it has the screw for clamping the heater. The other one is minimal material. Air being a horrible conductor of heat and the mass on that side of the better designed on probably promotes better thermal properties, as compared to the knockoff which would absorb unneeded thermal energy.
The chinese get some stuff right. Ive tried to deal with them on better automotive aftermarket cylinder heads and have been in some good discussions but theyll only change designs if you buy 1000. Some of their stuff is gettin better, but a lot of times its the small stuff that would make a world of difference if they just paid 10% more attention.
Got the exact same thing. Used some EP Lithium Grease on the gear train. Best extruder I've ever used. Been using for months without any skipping problems. Using volcano hotend. Great channel!
I've been running an all metal bondtech knockoff with a Dragon hotend in my 125° chamber temp printer that I use for Ultem.
works great at that temp. I never tried the standard bondtech nylon frame with pom gears, but I've had other gf nylons turn soft in 125° so I doubt the bondtech would work.
Are you using a commercial or hobby printer? How THE HECK are you sustaining 125° if you're using a hobby printer? That's amazing.
@@3dPrintingMillennial the frame is an ender 3, but almost all of it is replaced with high temp options.
@@3darms Interesting, I recently finished a large build volume CoreXY I've been working on and thinking about converting my old ender 3 Frankenstein to a high temp system. Did you switch to linear rails or do you think PC vslot rollers can hold up?
@@JJFX- depends on how hot you're thinking though
Would reaming out the thick plating in the holes allow for better heat transfer, and increase the flow?
Edit- Not that I want one. It's still way too heavy!
FUN FACT most machine shops have a hardness tester and usually can test for free if you work with them or just know them it is fast and easy but pointless unless the coating is in the materials path of resistance the rest is minimal thermal insl. but crome plays a huge part in real manufacturing extruders of all types for 50 plus years now and will soon here too! screw and barrel makes ways more pressures,flows and friction heats, were just not there yet in fdm,well its close but still not a true extruder for polys and alike the adv. BP "back pressure " in a Real extruder pressures are 3000-9000 lbs/per/sqIN then the crome is all about quality and application of CR38 or what have you ...and parts made for coating will be smaller to match the final dimensions based on the thickness used of the coating.my point here is the offshore one did not do this and is why your tolerances are tight most likley.
Cheers!
You should test the omg dm1 extruder. It's the only dual gear extruder that I think does not combine tension adjustment and gear alignment which can cause lacklash.
Thanks a lot....again a very syraigjt forward and honest review
Have you looked Vez's Goliath hot end and VZ-HextrudORT newest version? He moved the cooling block to the extruder (WC version even!) and designed the hot end to not use all the intermediate universal mounting flanges. the block now cools hot end, extruder, and even the motor. Looks interesting but he outsourced production to the PRC and I would rather have paid a little more for USA.
Can you drop the link for that?
I’d be interested in testing it
pom gear honestly will perform better if anythin
Great video! Learned much. Ty...
The silicone gasket is to stop heat creep into the stepper motor I would say
I hadn't thought of that. Silicone does transmit heat surprisingly well. So if this is the purpose there are better solutions.
Yes, I was also thinking that it's for isolation. And in fact I believe that any play it allows will make the gears get stuck, or skip, more rather than less (although it would also allow them to get unstuck easier).
@@DesignPrototypeTest I would assume it's to quiet it down? It seems super likely it would get pretty loud?
@@DesignPrototypeTest i think it actually does the opposite by preventing the heat from the stepper into the hotend. I have had issues with steppers on plastic extruders direct drives plates having increased flex when the steppers get to hot. this could solve that issues with plastic extruders.
But how? If anything I'm thinking the shell could be utilized to help cool the stepper, not the other way around. Look at the design of the heatbreak and how the shell is attached. I can't see that getting hot enough to affect the motor negatively. Since it likely plays little role in cooling the heatbreak, it just seems like unnecessary weight if it's not used elsewhere.
Very interesting review. Thanks
This looks really cool! It would be cool if they made a high flow version.
Are you gonna review the LGX lite???
Can you do a review of the Voron Stealthburner
150mm/s is nothing. My microswiss does that with a .4 nozzle. I wish all these reviews of hotends would use mm³ volumetric flow rate instead of speed. As an example, my MS hotend is only good for about 14/mm³. Volumetric flow is a much better benchmark of performance.
The rounded top edges and burr on the lower edges of the gear suggest it's been stamped rather than sintered.
Good observation. It is possible, but the walls of the teeth of the gear are so straight and the thickness is fairly thick. Makes me think this is the process being used for the production: th-cam.com/video/z5327SSM6G0/w-d-xo.html That burr on the top edges could be caused during the compression of the powder. Think of it kind of like flash in a liquid mold. Some of the powder works it's way up the wall of the negative cavity and gets stuck between the male and female halves of the press.
I would be interested to see those gears in something like the NF-SUNRISE, or in something like the "Mellow NF-DDG-Crazy Hotend Dual Drive Extruder" which is similar to this extruder in concept, but looks lightweight comparatively (yes... It's a knock off of the slice mosquito) but would be interested to see how it compares.
I have wondered about the DDG Crazy Extruder, I also wonder if a slice mosquito hotend can be used on it to get around the patent issues?
@@SolarityTechnology it is fully compatible with slice hotend.
What's funny is that silicone spacer has nothing to do with binding gears 😅it's there to prevent heat from the extruder motor from being conducted into the metal extruder body, and thus preventing heat creep.
There are much better thermal insulators than silicone. If this is the purpose the engineers revealed themselves to be amateurs.
What design of extruder do you think is the best for a direct drive setup?
Bondtech LGX Lite + Slice Engineering Mosquito + Bondtech CHT nozzle
That block is on at least 3 clones I can think of. The mantis, red lizard, one of the million variations of the dragon, and that one. I'm sure I'm sure I'm leaving a few out. I've sworn off ali express since I got burned on a new soldering station I bought 2 months ago. Tips for it last like ten hours and cost 20 a piece from the "premium" vendors and the cheaper ones ive tried are identical because I checked them with my multimeter and took them apart. I'm selling it and getting a metcal.
cant you get any genuine tips like from hakko etc
Weird, its totally hit or miss. Ive had decent luck with the ones that came with my fake hakko. But some of the tips eroded away quickly while others (including the thinnest one) just kept on chugging along.
You will find the H2 is like nearly 10 to 1 gear ratio, a stock BMG style extruder is around a 4 to1 and you will find most products using the LDO will be a planetary reduction gear system, so expect the BMG style to be much weaker on over torque than either of those products, just think of it like this, the BMG is in 4th gear trying to take of up hill from a stand still, where the others are in 1st gear, also the BMG was originally designed to be used with a full size Nema 17, not the pancake ones.
Dunno about your claims.. I've been running My BMG with a 22mm pancake motor for almost 3years now
and My X stepper gets warmer (not Hot) than my Extruder stepper motor ever has.
Note that BIQU has earned History of sketchy products/low quality control .
I have experienced that particular Joy.
Fill Your boots
@@barenekid9695 I have moved on from all of this, a lot changes in 9 months bud, I have designed and sell my own extruder based on the BMG gear set, does 100% everything I need or want, and I will never give money to another manufacturer for such a simple easy to design and manufacture product again, you can see it on my channel, and no it is not a Sherpa by Annex, its gear profile is closer to a Sailfish.
I have worked in metal scrap for 16 years, and what I saw in the video is not 99.98% copper mixture they are much lower among of copper would think mixture between copper and bronze and that they have planted with Crom so is they very difficult for heat to transform into nozzle, understand why they do so, given the copper prices today so of course they use lower copper blend to bring down the cost.
Sorry for my English.
99.995% copper is not used in the offshore one this is why it not soft like slices and of the correct color! agree the heater area needs to be contacting the actual copper!! i wonder what the crome hardness is is it even CR38 cro??
POM is not great in my opinoin use derlin/ phenolic if steel gears are not wanted? moulding a pei or peek pekk pec ...gears would be kool but i know it is not practacle
i use cf nylon PA12 for thermal gaskets like the silicone one shown but for thermal dissipation protections not alignments but hey,,, check out the western made long shlong dong by simon hes doing great with it what do you think ? keep up the content thanks the mosquito is subpar do to the small melt zones
aluminized copper not virgin............
I have a very similar all-metal version and it looks like 'should' work great, but in reality it doesn't. 1) The exit point just after the gears is not close enough to the gears so allows flexible filament enough movement to jam the entire extruder up. 2) The gears immediately starts eating into parts of the housing. 3) After a really nice looking design, the spring mech itself is ridiculously cheap and poorly devised meaning the spring catches on the screw giving inconsistent pressure. 4) Feeding new filament into it is very tough. I often have to remove the fitting so I can get new filament through. 5) The set screws are made of cheese. Just terribly weak. Recommend replacing with good quality ones immediately. Mine was the two trees version. Again... this is billed as direct drive compatible, that will feed soft filament (I was using 95A, so NOT even super soft stuff), it fails... miserably.
(note, I am only referring to the extruder, not the direct drive setup with the extruder)
Accelerating and decelerating a heavy metal gear vs plastic could change your retraction speed along with overall print time for having to compensate. Then again it's only if you print fast enough to make it a problem.
How does something like this mount to say an Ender3 ?
I see the silicon mat as patch. But hey if it works, why not.
What would be really needed is a flexible coupler (like the one on the Z axis on many machines) for the shaft so it can flex slightly radially but not axially.
I don´t think it is worth producting such tight tolerances for those machines and it isnt neccessary either.
As a mechanical engineer I can tell you, if a design does not work it is 80% the tolerances.
Why not drill the holes out to knock off the coating?
@8:40: this is for vibration dampening. Any vibration on the assembly transmits to the print, thus making it less accurate ( adds "noise" through vibration ). I worked as a parts engineer for Snap-on Tools for almost 20 years. You gears are made from powder and heat compression. In China, there are NO patents that can be enforced as you are shipping one piece at a time to the US. Btw, the ENTIRE unit is a heatsink. The copper pulss it away from that area faster to the other material to keep a coefficient, but not cool it too much.
The 4 uninterrupted screws passing through the silicone matt and rigidly attaching the gear assembly onto the stepper would transmit like 95% of the vibration despite the dampening properties of the silicone matt. Purpose designed stepper vibration dampeners isolate the motor through a harder rubber than silicon. They look like this: directvoltage.com/wp-content/uploads/2018/01/s-l1600zzzz.jpg They have no continuous screws going from the motor to the mounting platform. Therefore all vibrations must travel through the rubber. If the silicone matt was intended only to dampen vibrations it is a poor design.
False. The spacer is not for any kind of dampening. You have to remember, this is a chinese design. The chinese do not design anything for quality. It's designed for performance. The silicon space is to reduce heat from the motor being transferred to the metal extruder body, and potentially softening the filament before it reaches the hotend. Without the spacer, it's very possible this extruder design would not even work at all.
FYI, you probably have one of the early H2's that had the binding issue. They have solved that by loosening the tolerance of the gears (which is a 7:1 ratio btw), so please realize that. I installed an H2 on my Tronxy, and it's the total bomb for quality and performance. However, they have just released a Lite version of the H2, which looks amazing, and I will definitely be purchasing one for my AM8. Don't give up on Biqu, it seems to me they are trying to design the perfect one for you. Take care :)
I have these, but they aren't put into use yet, so can`t say anything about their useability. I think they are CNC machined and then gritblasted, hence the surface structure. They blast them to remove machining marks. CNC machining in China is cheap and the product is a fast machining job as the geometry is simple, so at such a relative low volume of production CNC would be the cheapest option surely.
BTW I put a LGX Lite on my Voron V0.1. It's crazy good. In fact its way better than the LGX original IMO. I love this LGX LITE>
yo cav put microphone on the left or right and still having a great sound...;)
Try out an omg v2s extruder! I am thinking about getting it and heard it's pretty good from the flsun Superracer community
Great video.
I also have an emotional issue... That microphone blocking the subject of the video. The majority of the time is killing me. Maybe move it off to the side of the shot?
Having the entire shell sintered metal doesn't make sense. If the silicone stepper motor spacer was made from a thermal pad it might improve cooling and offer the same benefit but with the silicone insulator it's just more weight.
The metal construction could be interesting for a cheap, water cooled hotend but this is just a frankenclone that isn't sure what it wants to be when it grows up.
Also if you go back to the listing you'll see they didn't include the stand-offs in the picture... I'm sure they're really happy you made this video.
You obviously do not understand basic thermodynamics. Any heat above the heater block is bad. You do not want any heat around the filament until it reaches the heater block. What do you think will happen if a stepper motor that is running at around 80 degrees C, is in direct contact with the metal body of the extruder? You are correct! That heat is going to transfer into the extruder body and potentially soften the filament (if it's something like PLA)
In essence, this extruder design would not even work without the silicon spacer blocking the heat transfer.
@@AndehX This is old so I'll have to look at the design again but it sounds like you're implying the heat transferred from the stepper into the shell would be so significant that it would impact on the hotend assembly. I'm failing to see how that's going to happen....
Regardless how hot that stepper is running, it would only be putting out a few watts of heat energy into what is essentially a heatsink in the open air. The amount of this that would radiate into the hotend heatbreak would be negligible. If you feel differently, please explain how that's going to be a problem.
love the exploration of crazy hot ends from china
I agree metal gears are what I'm buying from now on but so far I've got 3 titans and their POM gears look brand new after 1000s of hours at 70C chamber temps, looking to go hotter though. Current build is getting a Matrix Aqua that while it does have metal gears there are a few plastics parts that I'm copying in glass filled epoxy resin, they feel like PC so would probably stress crack in no time at such high temperatures and stress (they are the idler arm and it's tension adjustment ramps).
I know I have been too critical of you before. But I think this is a good video, great in depth info you give. Keep up man, sorry for the hard times I gave you before!
Thank you. Sincerely. Thank you. You are forgiven.
A'' Cmon Feed rate is Entirely !! due to nozzle restrictions Fit a Vocano Or even a simple CHT (clone ;-) nozzle and Watch the advantages disolve.
Can you show the patent it actually infringes on and how it infringes on it .
No hate , it just nice to see because a lot of people don’t seem to understand how that might infringe .
I am also interested, I think the patent is, excuse me but genuinely stupid. I want a patent to use 4 screws and copper. Slice engineering made a good hotend but they probably also took a lot of knowledge from other hotends. Using a heater and thermistor like the V6, patent infringement! :o a small tube instead of a large will transfer less heat is physics! Slice entering a community of open source and making patent is kind of rude.
@@christofferakesson5100 3D printing is really wierd , bondtech and there extruders , I litterally have a job that comes off my metal spray machine that is identical to the Lgx part …. It almost slips in .
Yet patent ..
I think the patent system needs an overhaul , there are to many identical patents just explained in a different way to gain a new patent
To me it seems like your extruder rates are simply limited by the ability of the hotend to melt the filament fast enough. Not the torque of the extruder.
Love your vids but I sure wish you could position your mic away from our view. Every time you hold something in you hands to show us the mic gets in the way, and it's like playing "peek-a-boo" when the extruder (in this case) comes into view.
I love slice
Slice is one of the best innovators in the market. They are awesome.
its sandblasted cnc parts
Hi, I'm a fan of yours, I also designed an extruder of my own, original, very easy to use, I can send you one if you want. Let's maintain the original design together
what about another one DD clone where it has pin heatsink? It adopts V6 hot end. Somehow heatsink looks the same as of Trianglelab matrix. Patent infringement here is nice April fools day... As an power and mechnical engineer its clear for me how heat dissipation devices are going around tube... for decades. I dont see any sintered metal in body. I c=can be wrong, but CNC machining and sandblasting is the possible and massively used thing. Nobody will sue them as parts are different and device performs worse.
bad idea to tweak parts for china, if I need a spare part down the line, nothing is gonna fit.
they're all knockoffs at this point. whats patented on the slice engineering without prior art? the attachment of the block can't be it. the nozzle attachment can't be it etc, use of standoffs is done before etc.
There's a functional difference between a mount and a structural heat sink. That's where the patent comes in.
@@paulthetexan both ways have been used before tho?
@@lasskinn474 I've heard that several times but never seen an example of prior art. For mounting, sure, but not for the specific application they used, which was to specifically heat sink through the mounts to reduce the thickness of the heat break. I'm willing to believe it's been done before if someone can show it, but so far I haven't seen anything.
i always thought at your critical thinking, when I designed my own extruder^^
If they had designed the hot end properly, requiring the reaming of the two holes, that means their QA is bad, and that makes me question the whole company.
Reaming is an additional operation that costs money. Furthermore, the exposed copper would then be at risk for corrosion at elevated temperatures. Copper(II) oxide is not very conductive (20-77 W/mK, depending on who you ask).
If we're going to spend money, an alternative would be to substitute gold plating. Gold not only looks nice. It's thermally conductive, does not corrode, and is soft enough to facilitate high contact area with minimal pressure. In that case, excessive plating thickness would affect cost, but not performance. Unfortunately, copper tends to diffuse into gold and make it succeptible to corrosion. Therefore nickel is usually plated in between as a diffusion barrier. At that point, it makes sense skip the gold layer altogether in our application, unless nickel oxide is thick enough to have a significant insulating effect.
Great video
Dude, as a videographer, PLEASE use a lapel mike or put that mic above your head on a boom to get it out of the shot.
Is it "hate" and "rightfully prosecuting" when there's nothing original about it because the core of the patent is wholesale something that's been used for so long in another industry that it's entered the public domain? Because where I come from that kind of patent is textbook illegal.
There are these guys who were smart enough to get into engineering school, then graduate, then get into law school then graduate. These are patent attorneys. Your comment kind of sounds like you think you know more than they do. Also, being lawyers they kind of like, you know, lose their job is they do things that are "textbook illegal." I think you are an ideologue who decided that patents are evil without a complete understanding of why they exist and now you are trolling on the internet with hyperbolic language acting like you have some sort of moral high ground.
@@DesignPrototypeTest An ideologue perhaps, nearly everybody in this world is of one sort or another, but that's not the ship I'll sink on. Jaded about certain subjects, very likely. Unfortunately, I've seen enough to know that "patent trolls" exist in force both with and without law degrees and that they rarely lose their jobs or careers even when caught, and also that quite often even illegal patents will be successfully defended in court. A common example of this is when a designer or manufacturer changes the number or position of fasteners in their own product without meaningfully altering any nontrivial aspect of the design and submit that as an entirely new patent. In the United States that's illegal for multiple reasons but it's also effectively a standard practice and constantly overlooked by Patent Officials and lawyers alike. Part of this is sincere laziness on many sides, part of it is due to the clerks being so inundated with submissions from companies who "just patent everything until something sticks" that they can't always if ever keep up with properly checking it all. Many products in the 3D printing industry are based heavily enough on existing products both there and elsewhere that despite enumerating the minute details the only part of the relevant patents that is defensible under patent law is the complete design, if even that.
My problem isn't in misunderstanding the purpose of patents and believing them inherently evil or corrupt or the like. It's in the fact that I've seen so many lazy and malicious actors in the field that I've started to assume it to be the case at hand more often than not when the subject comes up.
To point to an example mentioned in your own video above, you point out the use of four fasteners to secure the heat block as an element you believe to be a violation of one of Slice Engineering's patents. Even if one disregards that heat blocks and heat sinks have been in use in a myriad of industries for a very long time with all sorts of fastener counts and arrangements, you cannot legally patent the count or position of fasteners in a design - even though as you point out and as I have mentioned above, companies do exactly that all the time, usually in an effort to indefinitely maintain their proprietorship over a design or feature by falsely implying through weight of submission frequency alone that they are nontrivially incrementing the actual design itself.
*deep voice* METAL GEAR..
I am confused. I need a 350mm cubed printer. But i want it to be best qualiry print and reliability. What models?should i get and what mods should i use. $ not the problem. Just ease of use reliability and print quality.
It sounds like you are asking for a Prusa, but I think you should adjust your thinking and get an Ender3. It should be everyone's first printer. No better value. Then if you want a high performance machine build a Voron.
@@DesignPrototypeTest have already had 2 250mm cubed printers over 4 years. Will check them out and get back to you for best mods list. Thanks.
@@perrieiles493 looking at a prusa or voron or rat rig or vezbot. enderr 5 plus is the cheapest not bed slinger at that size i think
Are you sure it's not CNCed? That part will cost you $1.5-$3 depends on how many you order. CNC in China is CHEAP.
Its the throat. Their throat is way too long. Its heat creeping itself. The throat is so long that they made their own lengthened transition region where the filament sticks. All too common with chinese copies... They copy the forms, and the operating principles, but they completely lose the plot. Y
"Shame on you China.."? You're calling out an entire country on a single product from a single company?
Fair point. Then again, there isn't a lot of diverse behavior coming from that country insofar as 3D printer components are concerned.
Really !? The above was both a surprise and eyeopener
Been fooling with My exruder setup for a few days now. MY Clone :-) BMG w V6 hotend with a Clone CHT V 6 Nozzle ( NO flow issues at All !)
Mounted .. onto a Printed X carriage, equipped with Ball bearings ( Far smoother/lighter gliding than even Good quality linear rails 🙂 with Fans & wirings ..
weighs in at 305 gms !
Making those premade ' extruder contraptions' seems as mediocre.. certainly so weight wise.
Ohhh.. Must replace the bearing shaft on the BMG clones. Chinese makers 'Cheat' on materials (qu'elle surprise) using low grade Iron.. absolutely Not hardened steel
Consequently the shaft self destructs itself and the needle 'bearings'( ? ) in weeks.
Discarded CD rom Drives are a Great source of precision 3mm hardened steel shafts.. yer welcome 🙂
you can return thing to china, sure it's not one week or less. but yo do get your money back
The metal bmg just is a standard flow hotend, just compare the meltzone length. Thats why a standard mosquito won't out perform the cheapest volcano clone when it comes to flow rate. In reality a copperhead is just a bit fancy v6 derivative and both the mosquito and dragon (both standard flow) are just really fancy v6s with i bit more flowrate, but nothing to brag about.
and a 2022 Porsche 911 GTS is just a fancy version of a classic Volkswagen Beatle.
@@DesignPrototypeTest well, a mosquito has not that much more flow, probably around 16mm3/s, about the same as a dragon. Thats a welcome upgrade, as well a good heatbreak, but personally i dont believe that you can print pla without a hotend fan like they claim since i know a thing or two about thermodynamics (had 3 years thermodynamics classes). There isnt enough surface on the heatsink for passivly cooling to less than 50 degrees. Same goes for the dragon, which is essentially a copy of the mosquito and this is known for having heatcreep when printing slow.
The fully rigid mounting is nice and definitely a advantage over a v6, but the reliance on thermal paste to even function is just cost cutting, same goes for the copperhead.
All in all its not worth the 200 euros, at least for me, but you Americans should get it cheaper, right?
What nozzles where you using to compare the flow between the metal bmg and the other hotends? These have quite some impact on flow from personal experience. Also i think you are right about the distance between the heater cartridge and nozzle, since its furter apart the temperature should be lower due to the temperature gradient
Sorry to say but this ali extruders are crap.. Inlet fall off, it's not machined from one piesce and the screw part on the pipe part while fastening the inlet part. After assembling the outlet part fall off the hole and won't fit back in to place.... All metal! That's true! Should work like a charm but not...
on the contrary, slice engineerings improvement was just modification of a unused patent Stratasys had after the Stratasys patent expired.
Slice eng sliced their way in and patented a minor iteration, literally nothing innovative. The medicial industery does this quite often.
Straysys could challenge slices new patent for lack of originality but haven't yet, possibly there waiting for them to make some capital so they can settle for big bucks? Who knows
There are many books and videos out there which explain the patent system. Have you watched or read any of them? Your comment displays an enormous ignorance of the actual functionality in patent law. It is clear you have fabricated a ruleset in your mind that has no bearing on the reality of intellectual property law. For instance there is no such thing as an "unused patent." If you don't enforce your patent then you set up a precedence in opposition to the patent which you spent so much money to get. You will likely lose your rights to it. There is no way the legal department at Stratasys would allow such a thing to happen.
Very nice video! The filament extrusion test could've been a bit more scientific, at different temperatures, at different speeds, to assess more accurately the limits. Still, very informative and interesting video, thanks!
(I didn't even mind the little pro-patent rant, although I myself am very much against patents because of their inherent unfairness, their reducing of personal freedoms, and how much they hinder progress.)
Did you see my interview/debate on The 3D Print General's channel?
@@DesignPrototypeTest Yes, I did. Unfortunately Mr General was quite unfamiliar with the arguments against patents and actual research in alternative solutions, and seemed to mostly go with his gut feeling based on some unspecified experiences.
@@marcus3d Would you briefly expound on some of those arguments and alternative solutions? I am not pro government interference with trade, in general, but innovation is risky and ripping off the innovation of others is not, so there is much more incentive to rip off rather than innovate unless there's some protection in place. Please help.
Without the competitive advantage that patent protection provides, most inventions would have little incentive to be created in the first place. If you want to argue for shorter patent durations, I could understand a case for that in a more rapidly evolving environment. Getting rid of patents altogether would be convenient for the consumer in the short term, but would hinder progress in the long-term. Personally, I'd be far more inclined to invent if Chinese infringement wasn't such a problem.
orbiter 2 is better
They have a legal obligation to protect their patients.
This guy is never happy
Or the product is actually bad, and you should stop fixating on me. Seriously, you guys don't even know my name. Why does everything I say have to reflect on some aspect of my person. "Sometimes a cigar is just a cigar."
That mike is really annoying
Hello. I don't know where to start. In general, I have an interesting extruder drive here. It seems to be new, I have not found any analogues.
I called it
SL_ST EXTRUDERRR
uploaded it to GrabCAD.
I am interested in your opinion.
Some 2-star feedback, I don't like your fake black background in the talking head segment. The green fringing is bad too.
Noted. Thanks.
A green screen is useful to display graphics behind him, but if he's just gonna have a black background then better put up a black background. 😃