Linear Module Loose Procedure

[dstarke]

I had a loose linear module for one of the z axis. The result was this:

Helix Pattern on Wall Surface

I did not notice it at first but there is actual a difference in the pitch of the helix depending on the print bed position (the bottom of the part is on the right side). Does that assists your theory @brent113? [placement-comparison] P.S.: I did contact the support. Let’s see if/when they get back to me.

As for the x/y axises you can measure the backlash and see if it is more than the expected 0.02mm.

Is there a better way to calibrate?

I know this post is a bit old, just wanted to add that I do have backlash compensation up and running. The latest firmware has backlash compensation with M425 enabled, the only caveat is it’s not able to be stored in firmware. That’s no big deal though as I created a custom “Home” macro in Luban that contains the M425 command, as well as adding it to my slicers so all gcode files contain the appropriate command before it homes. The syntax is here: https://marlinfw.org/docs/gcode/M425.html I m…