How to find source(s) of 1.1mm slope to left?

[brent113]

@edf

Z axes differing in travel

There were issues with linear modules have different lead screw pitches. Maybe worth investigating this:

"Bump" in Y-axis

I’ve solved the problem! At least for myself, hopefully there will be other lucky people. After reading the Snapmik’s comment, when they’ve realised there’s a difference in the linear module speeds, I’ve tried the same and got the same result. And indeed it comes back to the same state when you go back along Y axis, so it’s a different steps/mm for the modules. I’ve decided to check how other linear modules behave. I had to disassemble the printer completely. [2020-10-19 22-05-01] And make …