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Thread: Weird G29 behavior
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06-13-2015, 02:05 PM #1
- Join Date
- Feb 2015
- Posts
- 371
Weird G29 behavior
When performing the procedure my arm drops, then the Z descends and then moves back up before moving down again to probe the bed. The weird part is that I thought that is was supposed to move down and when the probe touches go back up and then descent again at a lower rate for accuracy. On my printer the probe never touches the bed before it moves back up. The slower decent does probe the bed.
Is this normal?
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06-13-2015, 06:45 PM #2
What happens if you manually trigger the switch before it moves very far? Does it recognize the switch got pressed?
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06-14-2015, 07:38 PM #3
- Join Date
- Mar 2015
- Posts
- 10
I had a similar issue, it ended up being the wiring to the switch was getting pulled while extending the arm. Marlin thought it was triggered so it never touched the glass.
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