Frage Stepcraft calibration: not so round holes

Hi

I have a stepcraft CNC table that i bought about 2 or 3 years ago.
It's used quite well but since this week ik have the problem that it doesn't create round holes anymore.
When i upload the G-code it looks all good, so it's not a software issue.

I already rebuilt my CNC 3 times for maintenance cause time belt slipt or ripped in pieces and now i don't now what causes the problem of it not making round holes. It doesn't get jammed because when i create a square it all works fine.

Anybody got iany idea's to solve this problem?

Or is it time to buy a new CNC machine lol

Hi,

do you've following things are ckecked?

-maybe your spindle nuts are worn out, please check; if true you must replace it. (or adjust; if you've justable spindle nuts)
-if you use PLT datas,then if necessary to use into the "parameter (in WIN-PC-NC): setting 1/40
-if you use estlcam and .din data ,use setting 1/1000

I hope it's helpful in your case.

I wish you all a great day!

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