I will tighten it more if that ends up being the only solution, but I know from past experience that that will cause the odd servo fault later. That has helped some, but you can only tighten it so much. I have the adjustable backlash nut on the Z axis. DeskCNC compensates for it, as expected, which ends up moving the headstock too far down in -Z. This makes some sense as the weight of the headstock is holding the assembly against the upper faces of the threads on the screw. However, when moving down (-Z), the backlash is either zero or at least less than that moving up. (My X/Y backlash is only around 40-50 steps) The backlash is significant: on the order of 700+ steps. ![]() I have measured it, plugged it into the machine setup, and DeskCNC is compensating for it quite nicely. My Z axis has backlash when moving up (+Z). Z axis - how to handle backlash that is different +Z vs -Z IMService Discussion Forum: Z axis - how to handle backlash that is different +Z vs -Z
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