How to calibrate x, y and z?

Well that’s looking loads better! :+1:

There was a pretty long discussion of holes that if you have the time you might read, lots of good ideas and discussions in there including the XY Compensation. Here:

https://forum.bambulab.com/t/why-ovals-and-not-circles

BTW - In the top picture of the circle (inside diameter) it looks like the calipers are not square in the hole, it may be perspective…

Measuring inside diameter can be tricky, be sure to measure at multiple points around the circle. Best practice is to mark the X and Y directions before pulling from the print plate.

But you’re definitely making progress. 3D printing teaches life skills - patience amongst others… LOL

Well done!