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quadmauler

Problem with UMO

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This is a very very common problem. You might not believe the solution but this is the correct solution: tighten the set screws on all the pulleys for your X axis. that is 6 pulleys. SIX! not 4. In fact the most important two are the ones on the short belt - to the motor and above the motor.

Tighten them extra extra tight. If you have an L shaped tool it should hurt your fingers. VERY tight.

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