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Why do we still use stepper motors? (sopuli.xyz)
submitted 10 months ago* (last edited 10 months ago) by DreadPotato@sopuli.xyz to c/3dprinting@lemmy.world
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Why are 3D printers still stuck on stepper motors? Why haven't we transitioned to servo motors with encoder feedback for positioning?

Is it just too cost prohibitive for the consumer-level? We would be able to print a lot faster and more accurately if we had position feedback on the axes. Instead we just rely blindly on the stepper not skipping any steps when we tell it to move, hoping for the best.

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[-] beeb@lemm.ee 62 points 10 months ago* (last edited 10 months ago)

Have you seen how fast printers with stepper motors can get? They print benchies in less than 3 minutes. The bottleneck is not the motion system, it's either the hot-end or the part cooling. Also stepper are super accurate and very flexible. Drivers are advanced and can tune for torque, speed, sound etc. Collision detection and skipped step detection is also a thing.

[-] brightandshinyobject@lemmy.world 11 points 10 months ago

Not disputing, I want that 3 minute benchy. Where does one find this magic?

[-] towerful@programming.dev 12 points 10 months ago
[-] Cornpop@lemmy.world 5 points 10 months ago

The print as absolute shit though. Literal garbage.

[-] DistractedDev@lemmy.world 6 points 10 months ago

Looks pretty good for the speed to me! This is an experiment. Someone will be able to build on that and make it better.

[-] bluewing@lemm.ee 3 points 10 months ago

Speed Benchys mostly are garbage quality.

[-] beeb@lemm.ee 1 points 10 months ago

This is mostly a cooling issue. Not being able to solidify the plastic fast enough after it's been deposited.

[-] Cornpop@lemmy.world 0 points 10 months ago

No shit lol

[-] PipedLinkBot@feddit.rocks 3 points 10 months ago

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[-] FuglyDuck@lemmy.world 5 points 10 months ago

Tune up a coreXY like a Bambu or Voron, use all the latest features in marlin (like MPD thermal and linear advance.)(I assume other firmwares have similar.

[-] soggy_kitty@sopuli.xyz 4 points 10 months ago

Yeah does anyone have a link to a 3 min bench print?

[-] Sphks@lemmy.dbzer0.com 10 points 10 months ago

3 minute benchy

It's custom made printers and it makes shitty prints.
https://www.youtube.com/watch?v=IRUQBTPgon4

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this post was submitted on 10 Jan 2024
71 points (92.8% liked)

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