I need some help with debugging. I'm working on big part I'm planing to make and making some test cuts. When I've done 4cm long pockets everything looked great. Now I've made them 20cm long and some strange problems started.
After the first pass there appears an error on X direction and position moves about 1mm to the right. You can see this on top part of two attempts, where has to make a slope on Z axis, but also moves too much to the right. It also can be seen very clearly in the middle, where it started making second pass and it's about 1mm to the right comparing to the first pass.
What is more, when I started looking more closely, it looks, like during whole operation, it drifts a little bit, so top and bottom parts are a little bit to the right comparing to the center (model itself is square), so the final pocket is more like a banana shape

On the first try there was a problem with Z axis, where small bolts on stepper became loose, so it wasn't actually moving the Z axis. I've fixed that and also checked X and Y axes, but they seem to be bolted properly.
Today I'll try to generate another path, because this time it was routing in circular motion, whereas I think moving in straight lines should be faster, but I doubt it's a problem with G-code. Looks more like a problem with drivers/steppers/axes... Or maybe I'm trying to go too fast?
Some more info: 3.17mm bit, katsu router, all the parts exactly as described in R-CNC instructions. G-code is generated in Fusion360 using adaptive clearing.


