Creality CR6 Optical Sensor Activation Target - Shorter
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A replacement part for that small probe screwed to the X Axis and used to block the optical Z End-Stop switch
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This small part is used to trigger the Marlin firmware to activate the nozzle bed probe.
It does that by blocking an optical sensor as the probe approaches the bed.
The original metal probe arm is 28mm long. The arm on this part is 24mm long, though it would be easy to edit the .f3d file uploaded here, to make the arm any length you want.
I made this shorter arm to cause the probe activation to happen closer to the sheet metal flexible bed.
The stock glass bed is actually thicker than the magnetic sheet + flex-metal bed, so the longer stock probe results in activation happening a little sooner (higher above the bed) with the magnetic bed than with the glass one.
Whether it matters that the probe be tared as close as possible to the bed, but before striking the bed, I do not know, but this printable/scalable probe allows me to do so.
Some printers have also been delivered with this piece bent in transit, so this model allows you to print a replacement.
CAUTION: DO NOT USE THIS PROBE, if a manual check shows that it will not activate the probe before the nozzle strikes the bed. (e.g. A Glass bed may be too thick to use with this shorter probe.)