What is backlash in a 3D printer?
Backlash is mechanical play in the transmission. When the motor changes direction, it spins through the play briefly before moving the actual part. Leads to inaccurate corners.
Where it occurs
- Loose belts - main cause
- Worn pulleys
- Play in linear bearings
Solution
Tighten belts, replace worn pulleys, check linear rails.
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