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[BUG] Incorrect home z

Open eiffel31 opened this issue 4 years ago • 0 comments
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How to observe the problem:

  • configure probe offset perfectly (*)
  • place some sheet on the bed
  • home z
  • thanks to the touch sensor the 0 is now the surface of the sheet
  • move z down until the nozzle has light contact with the sheet => if the value is 0.2mm, this is the home z calibration error

(*) probe offset:

  • sheet on the bed under the center sensing position
  • BL OFF
  • run probe offset
  • adjust until the nozzle has light contact with the sheet, this offset is the difference between the sensor and the nozzle.

Hypothesis:

  • may be 0.1mm offset is added at probe offset time?
  • may be z homing is done in the wrong way relative to the BL correction? (sensor is placed in the middle, but this is not the nozzle position)
  • may be the mesh does not consider the offset between nozzle position and sensor position?
  • any other idea?

eiffel31 avatar Feb 24 '21 09:02 eiffel31