Circles out of round

Is my Ortur Laser Master 2 Pro XY out of calibration? Is there a way to calibrate mechanically or thru Lightburn SW? It is a fairly new system and not used to much. Circles and repeatability after a pause likely in the Y axis is off.

Andy

That looks more like mechanical slop than a calibration issue.

Go over your belts and pulleys first.

Are you using a very high speed? What are your feed rates ?

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Speeds are not typically higher than 500 mm/min. I just touched the belts and to my feel no slack. Linear lines look good. But just did a run now with a corner radius and the tangent line is not perfect (not so bad). I will do another test run with a 50 mm circle now.

Primary item to check is the set (grub) screws. This link is for Sculpfun machines, but most of the information appliea to all diode lasers.

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Thanks. FYI my 50 mm OD circle measures x = 50.3 mm and y = 49.3 mm.

Image shows mechanical issue.