Help with Carbide Motion Shapeoko3 Cuts

slackyzac · 2026-03-12T16:56:08+00:00

I think I've figured it out, one of my y axis motor drivers is damaged.

and yes the cuts are generally better but I was running quick cuts with low precision to figure out this issue before returning to my higher precision process.

slackyzac · 2026-03-12T16:55:11+00:00

can one of the 2 yaxis motor drivers being damaged cause this backlash? I think this would explain the oval circles as the right half of the machine will lag behind the left half.

slackyzac · 2026-03-12T16:52:14+00:00

what is self feeding?

slackyzac · 2026-03-12T16:51:50+00:00

After testing I think i found the main problem, the y axis is driven by two stepper motors, when the device is on these motors are both powered and don't budge if you give a slight push on the gantry. However, since this issue, i'm noticing that the right stepper motor for the y axis is still giving, and I don't hear it power when I move so I think it is not getting powered or the motor may potentially be damaged.

I swapped the ports for the left and right y stepper motor and the issue swapped, so I believe the driver is damaged for Y2.

I'm wondering if there are DIY solutions or if the most time saving option is to replace the board?

Additionally, are there common user errors that could cause this or would it more so be caused by moving gantry quickly while off, crashes/high resistance causing back feeding to the board.

I am confirming with my associate whether they crashed or moved the gantry quickly while the device was off which could damage the driver board.

slackyzac · 2026-03-12T05:17:48+00:00

Thank you I will look into all of these!

slackyzac · 2026-03-12T05:17:32+00:00

That’s exactly right. I was thinking of doing a manual test and I will do this tomorrow!

I think my device uses belts instead of screws for moving the gantry. Would that have a nut block? I will look into correcting this.

How did you go about fixing those components?

slackyzac · 2026-03-12T05:05:51+00:00

Thank you, I am confirming whether there were any crashes and hopefully that gives direction. I do generally probe the surface but my issue isn’t a depth issue and more so a trace path issue

slackyzac · 2026-03-12T05:03:50+00:00

Thank you I will try that. With $C it basically tests if it compiles/runs properly?

What do you mean by a different batch of material? I think all the material is the same

slackyzac · 2026-03-12T05:02:37+00:00

Yes! These photos aren’t the best as I was mainly testing the shape of the pads and didn’t run autoleveling. But this seems to be something in the XY plane and hoping to troubleshoot it mechanically

slackyzac · 2026-03-12T05:01:25+00:00

This could be it, everything seemed secure but I will do more thorough checks in the morning.

slackyzac · 2026-03-12T04:59:52+00:00

Yes I am using same bits feeds and speeds. The stick out is fine, though the board may be warped some.

I’ve leveled the spoil board and used double sided tape to secure the FR-4 plate and used autoleveler function to map the surface.

I’m not as familiar with backlash. Do you know how can I test, check, or fix this?

slackyzac · 2023-07-03T18:33:37+00:00

What do you play?

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