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How to check if linear rails are preloaded?
How do I know if I my rails are preloaded? I am asking as it feels like the z axis is unable to properly do the micro movements required for implementing the bed mesh. Very easy to see in first layers where part of the first layer will be perfect, usually where the print starts, another part will be slightly over extruded and another under extruded. Bed mesh variation of 0.15mm, so within the norm.
And obviously how do I “preload” for better positioning accuracy
And obviously how do I “preload” for better positioning accuracy
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