Y-Axis V Roller problem

CNC Machines Shapeoko
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This machine is kicking my butt. I cannot get it dialed in whatsoever. It seems like I fix one thing then there is always another…currently I am battling with some Y-axix chatter from the gantry with a V-roller that will not get tight. I read that the v rollers should not spin freely, correct me if I am wrong…all of my v rollers are tight except for one. It is not the roller itself as I have swapped it with a tight one and still end up with the same result which tells me something is skewed. please help point me in the right direction, I just wanna cut stuff!

Here is a video: https://youtu.be/5cS-LeXLGxA

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I had something like that happen when I first put mine together, and it was caused by my belts being too tight. I don’t know if it’s the same issue though because it was all of the rollers, not just one. Hope this helps!

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That sounds like there’s something else going on as well.

Does the Z carriage move on the X beam OK?

With the power off can you slowly but smoothly move the X beam forward and backward to the full extent of Y travel?

Are you sure you don’t have an X and Y stepper cable crossed over?

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I had a similar issue with my y…it seemed that

  1. My x was slightly twisted so I had to loosen my x on both sides. Then adjusted my v wheels tight then retighted one side/torque x square as I tighten other side

  2. Loose pulley on my y

  3. Mis matched belt tightness

This all added up to my x wanting to twist and bind as it was traveling.

Humor me and rapid to front center and measure the distance on both sides from front of machine…

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Thanks for the advice, I believe this to be the issue since one of the wheels isn’t sitting like the rest…I ran the rapid front middle, the difference was off by 2.8mm!

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If machine is square that is normally a belt tension issue on my machine

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After doing some more digging, tearing it apart I found the problem…

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Looks like it’s got one winding with a broken connection, probably just one of the wires.

Try swapping the motor connections over between the working and broken motor, that’ll help narrow down where the failure is.

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Please contact us about this at support@carbide3d.com and we’ll do our best to sort things out with you.

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