Z Axes step motor issue

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Joined: Sun Jan 05, 2020 7:28 pm

Z Axes step motor issue

Post by fabry_mf » Sun Jan 05, 2020 7:46 pm

Hello to everyone,
I build my 3d printer following this yt series (https://www.youtube.com/watch?v=BPfFqAp ... _DPNh3KWgj) but I have an issue with Z axes step motor.
When I turn on my 3d printer and I go to Prepare > Move Axis > Move 1 mm > Move Z both z axes step motors try to turn themself but they can't.
It's not a eletrical issue, because I try both step motors without alone and they works.
If I try to turn them with hands, they do it, not smoothly (the others two step motor turn smoothly) but they turn.
I think the two lead screws doesn't turn correctly inside the z-axis nut.

Is it possible? If the problem is this, what I can do for correct the behaviour?
If not, what can be the problem? A settings, maybe?

The video series I mentioned above is not very clear and I'm not sure about how much millimeters lead screws must be inside the coupling or how much millimeters step motor must be inside the coupling. But, I said it before, with hands both step motors turn themselves correctly.

Help please :)

Posts: 189
Joined: Sat Jan 26, 2019 8:42 am

Re: Z Axes step motor issue

Post by Jarda3d » Mon Jan 06, 2020 8:21 am

Hmm, I look that Geetech made very good changes to original Prusa....

At your problem - I think that it is misaligned rods.

See at Original Prusa crap:
Original PRUSA i3 MK2 crap.jpg
Original PRUSA i3 MK2 crap.jpg (201.62 KiB) Viewed 14067 times
A10M Slic3r profile: here and fresh on github (lot of tips here)
A10 Slic3r profile: here
TIP: tight all screws and wheels (except right side of Z axis) and re-align frame while assembly. And silence it.

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Joined: Sat Dec 21, 2019 12:13 am

Re: Z Axes step motor issue

Post by sneazzy95 » Tue Mar 24, 2020 8:32 pm

Hello, have you found a solution or not yet ? Cause there's no new comment and it's been a while.

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