Triac Z height issues

[Neale]

Any chance that it is a coupling or pulley slipping? Engraving - especially if you are V-engraving - tends to generate a lot of Z movement which might be aggravating something? I am assuming that nothing in the settings has changed.

[andy_con]

Any chance that it is a coupling or pulley slipping? Engraving - especially if you are V-engraving - tends to generate a lot of Z movement which might be aggravating something? I am assuming that nothing in the settings has changed.

no, it only happens when the spindle is on