Need help diagnosing issue - X axis drift

[WillAdams (William Adams (Carbide 3D))]

Things to check:

• wiring in good condition and all connectors secure
• pulley set screws in place and pulley secure? (put a witness mark across the ends of the pulleys and motor shafts)
• belt in good condition and properly tensioned:

Measuring belt tension, squaring and calibration

A post about belt tension, how to measure it, what effect it has and why you need to manage belt tension in order to usefully calibrate and square the machine. As usual, no criticism of the machine here, in fact some quite clever design choices seem to have been made. The question of drive belt tension has been bugging me. How much you should have, how to check it and how it affects machine performance. I failed to find any quantitative data to use, so I went and started measuring; and found t…

One other thing to check on an SO Pro — lubrication:

https://carbide3d.com/hub/docs/maintenance/