Scanning engraving issue

Community Laser Talk
1

I have been trying to set the scanning adjustment offset in Lightburn and I get it pretty close. I do however have these artifacts sticking out and I have no idea how to get rid of them.

I have tried swapping out the driver for that axis, I swapped out the controller with a similar one.

These blocks are 10mm x 40mm with a 0.5mm spacing.

image
image1192×642 87.6 KB

mm/sec is marked on the right

If this was the scanning offset issue, every second line would be out so i am pretty sure its not that, since this is the closest I could get the scanning offset to be.

Does anyone have any Idea what could cause this ?

2

If I zoom in on the image I can see an alternating pattern of artifacts; granted sometimes it’s worse than others. My thinking is mechanical on the larger ones. May be some slippage or backlash issues. Have you checked for looseness in that axis.

3

The axis is pretty tight, I would be very surprised if it is mechanical. I would expect to see it more often if it was backlash or mechanical.

4

I eventually replaced the Marlin/Arduino based controller with a Ruida Controller, which have resolved the is issue.

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