Hi all, I’m looking into swapping the U1’s two XY steppers for 0.9° motors to further reduce VFAs, following up on the ideas from the “Eliminate VFA on the Snapmaker U1 (for free)” thread. I’m already running the Extended Firmware, so the Klipper side is straightforward (full_steps_per_rotation: 40…

VFA is short for “Vertical Fine Artifacts”. It’s the slight vertical ripples which sometimes are visible across walls (best shown on glossy materials) and which unfortunately can have a multitude of sources and therefore are hard to eliminate. Possible sources include: Stepper pitch (1.8° in nor…

Open a ticket and see if you get some information about, maybe you got luck: https://snapmaker.formcrafts.com/u1-troubleshooting-request

But I don’t have a problem; I’m just looking for information about the stepper motors used in the system.

Sounds like you’ve been nominated guinea pig.

Someone on the SM Discord did this a couple of days ago and it didn’t produce good results.

Yes! [image] Discord - Group Chat That’s All Fun & Games Discord is great for playing games and chilling with friends, or even building a worldwide community. Customize your own space to talk, play, and hang out. This links directly to the comment that menti…

Stock XY motor specs / 0.9° stepper swap on the U1

U1 Toolchanger

CrazyIvan July 7, 2026, 10:52am 2

Link?

OK, found it: Eliminate VFA on the Snapmaker U1 (for free)

Unfortunately, nowhere can I see it explain what “VFA” means (for any of us who don’t know).

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Stock XY motor specs / 0.9° stepper swap on the U1

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