Hi Guys!
I want to post an update, maybe it will be helpful to someone.
We have replaced carriages on linear rails. This did not solve the issue fully, but things changed a bit.
Lines on 300 mm/sec were spaced very irregularly, now it is much better. Jack Wilborn Thank you so much for pointing to this part.
The actual thing I am trying to cut :
the unevenness on the Y seems to be gone, or at least be better, but there is still shift on X axis.
I saw the backlash settings in the controller and add 0,3 to it, which helped with the lines, but messed up circles a lot.
so now I have to cut circles separately, with “hide backlash” option, then adjust the X backlash in controller settings and cut the rest. The “hide backlash” settings shifts lines too much in the opposite direction if is used for the whole bit.
I wonder if I should replace belts or mottors, or the controller… Or everything if that’s mechanical 