They said a lead screw 3D printer was impossible
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- เผยแพร่เมื่อ 20 มี.ค. 2021
- Sure it is... If you believe it is.
See the 3DLS here: www.thingiverse.com/thing:403...
See the all new LSD here: www.thingiverse.com/thing:479...
And all my designs here: www.thingiverse.com/morganlow... - วิทยาศาสตร์และเทคโนโลยี
Nobody said it's impossible. Everybody says it's stupid.
whats stupid about it?
@@cbrunnem6102it's not stupid, just very inefficient. Leadscrews, though depending on the pitch, are fairly slow moving (in the sense of having low movement distance per rotation) and have much more friction than for example belts. Plus, when using them horizontally, you need to eliminate backlash, which you do with an anti-backlash nut, which increases friction even more. The screws need periodic lubrication and the nuts wear down over time.
Don't get me wrong, the screws have their applications in budget cnc routers for example, because they don't stretch like belts do, and you need a lot more power anyway to overcome the cutting forces, a bit of friction on the screw is negligible.
In a 3d printer it just reduces speed and efficiency of the machine. Otherwise it is a valid solution.
@@cbrunnem6102 Low printing speed and low precision due to backlash and wobble. I used my precision cnc machine as a printer at one point. It made very nice prints, but was far too slow to be acceptable.
@@propheteyebert7063 you both say that in the face of someone proving you wrong.
@@cbrunnem6102 What I said would be proven wrong if the machine achieve 600mm/s moves and the print layers look perfectly uniform with no artifacts. That is easily achievable with a corexy mechanism. A screw driven printer is handicapped.
I've never heard anyone say this is impossible.
Earlier versions of 3d printers (aka rip raps) only had lead screws. The belts and linear rail came much later.
say goodbye to layer shifts and welcome the broken buildplates and prints
Holy crap you're so right... I broke every single part at first. I had to design a new Y motor mount that's like a torque fuse. It jams it will snap the motor mount and the closed loop controllers shut it down. I have never broken the 3D printed mount for the Y nut though, weirdly.. It's designed to allow a little up and down movement though.
"...oh yeah, my supply is big now."
I dont wanna be that guy but pink*
It's not impossible, it's just slow af. No need to have infinite torque on a 3d printer. It experiences almost 0 load compared to a CNC mill.
Who told you that? there are many lead screw only 3d printers that have been around for years.
This is OLD! and exactly. It was on thingiverse. My goal was to make it more accessible. The 3DLS is still running to this day, daily.
because it's so slow right?@@Morninglowe
These machines have never been slow. Are industrial mills and such slow? It's expensive, belts are cheap. @@mtstreaman1138
@@mtstreaman1138 This was the best joke I've ever read, thank you, you made my day. I am dying right now.
hmm layer shifts in the y axis wont happen too easily on this one, nice job
Who would say it's impossible? That doesn't even make sense. But, you have a nice build in any case, thanks for showing it to us!
Pretty good design! I also build a cartesian 3D printer whose all axis are lead screw driven which is not bad, just take a longer time to finish the print :D
Nice! Join our discord and show it off: discord.gg/mBQrKgSZtA
Something thats stupid and working, but still stupid.
I don't think anyone has said it's impossible..... It's just a leadscrew not rubber bands or something...
Imagine a hed crash. Ain't never getting layer skipping on this thing. I wanna see its max speed.
I have crushed print heads, broken off motors, snapped motor shafts and more. She don't stop.
@@Morninglowe my god it's even more powerful than I thought.
jeez that's the quietest printer i've ever seen (heard)
It is very possible to do it, but it is likely going to cost more, a lot of 3D printer hobbyist don't know that "belt" is a cost efficient method...not a great method. It does good for that application because the tool head doesn't see a lot of force applied to it and the temperature is low.
You're totally right! There's no need to do this for the average printer, that again is not the point here. This is a machine that an 4 years nearly non-stop. Tool steel nozzles, I had to replace all the pins and bearings in the print head with hardened ones. I wore out 3 BIQU H2 print heads to the point they can't be repaired. I'm not a hobbiest. Theses machines run run run.
@@Morninglowe and this makes total sense, I would have suggested to have a higher diameter of lead screw to reduce the risk of deflection to "length of tool space", but I think you already did ! Is that a T12 or 15 ? (y axis and x axis).
And how did you address the inertia of the leading screws, did you opt for higher current and larger stepper ? (plus positional feedback)
I still want to see if an Ultimaker style printer could be made with screws and linear rails, instead of rods and belts.
Yeah from my experience rails would make almost no difference at this point and I wanted to keep it cheap and compatible
@@Morninglowe with my idea, rails would make it easier. 4 rails that would hold the screws in the cross gantry configuration. Of course, it'd probably be better to just go with 2 Y motors moving a X gantry like in most CNC machines.
How are cnc mills and lathes ran? Seems like they would use lead screws.
Lead or ball screws. As I said that is my background, I convert old manual machines to cnc
What kind of ballscrew would I need to do this?
Those are not ball screws, they are lead screws. Ender 3s use T8x8 lead screws for the Z-Axis, so I'd suggest to start looking there. But if you want an efficient and fast printer, use belts on x and y.
Oh it's always been possible. But it will always be slow
Nothing about it is impossible, the earliest 3D printers did this because it's easy and accessible. But there are many reasons modern printers don't do this anymore now that belts are so easy to get and there's so many belt designs to reference.
Is this the raw sound of the printer? Doesn't sound very loud at all. Looking at building this from your BoM now... using Am8 kit.
Yeah raw natural audio. This runs some pretty specialized parts to achieve this. You can find more info and quick answers over on discord: discord.gg/R2vPAdQPEQ
Marlin has provisions for a delta or kossel printer, I have another tiny one that was built off Thingiverse and just wanted to try my own. Once I get the parts here I will build and update this one with all the info needed to make it.
A printer can be controlled with anti-resonance input shaping to reduce the amplitude of these vibrations. So the complaince of the belts is a welcome compromise to the stiffness of screws since you reduce play. So im expecting you use ballscrews or anti-backlash nuts of sorts.
That said your printer is very nice, and im curious why you designed it this way? I really want to understand... Since when everyone writes something off as "not the way" it doesnt mean the solutions have been exhausted. Especially not in engineering.
This video is old and you're right! I did it as a challenge from a friend, I had my Anet A8 and him not being an engineer or experienced in this at all said to me "Why not design your own printer that moves like your mill?" So I did. I have 2 CNC mills, my favorite is the Roland MDX650. My 500mm cubed machine has a ball screw on the Y axis and but the X is lead still. The bed is 23 pounds on that machine though. The 3DLS and it's twin use AC servos now with built in controllers that monitor position and the biggun uses big 70 watt closed loop steppers. All can hit 150mm/sec all the time and all the leadscrew have anti-backlash nuts. It's super tight and the key is it's stupidly repeatable.
I've been slowly converting my ender 3 into this. No regrets.
Sweet! You on my Discord? discord.gg/R9T42GQuMj
Would love to see it!
@@Morninglowe I am now. Hopefully I posted it in the right channel.
change to lead 16mm better
Impractical*
all leadscrew corexy when?
Maybe someday though right now I have no need for that.
Who would say it’s impossible? Check out the Pantheon Design HS3. Whole printer runs on ballscrews
I have 7 printers and I bet those ballscrews cost more than all my printers combined
Why would this be impossible in the first place?
People made dumb assumptions
Lol I get it, say dumb stuff for engagement, thats smart. It showed up on my front page...but its sounds like youre being unironic, which is weird...no one said its impossible, nor are you doing anything special. Calling people narrow minded then being narrow minded yourself is a wild kind of irony. Considering you dont have your x-axis cable chain oriented properly, and all of that wiring is such a mess, Ill leave it at ignorance. People buy a 3d printer, learn onshape and think they are engineers and wanna act elitist. Glad you got this working, it was always going to!
No they didn’t.
GENIUS! Now you can have wobble on all axes!
Yep, those people were wrong asf.
Check the Pantheon HS3, industrial grade 3D printer with... lead screws all over ^^
Ball screws.
This guy deprogresses
what are you even talking about? This setup is far more accurate then belt driven 3d printers will ever be. Not that leadscrews don't have backlash, but it's certainly better than what belts can offer. Yes I know you can tighten the belts but if you are planning to waste 10-20 bucks every month for a pair of new belts then you are better off with the lead screw setup, right?
Back to the year 2009!!!