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Gcode modification - M555  

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Vincent
(@vincent-5)
Active Member
Gcode modification - M555

Hi,

I want to print directly on a small polymer (50mm x 50mm) that would be taped on the steel sheet. I'm trying to find a way to tell the printer that this small polymer square is the new Z reference. I thought about modifying the initial probe that the printer does while the nozzle is at 175 degrees, before the purge, so that it probes points where the print will be (instead of a little bit farther from it).

From what I understand, I have to modify the M555 line in the Start G-code. I tried to modify the numbers there but nothing seems to change during the probing.

Does anyone have experience with this?

 

Thanks!!

Vincent

Posted : 23/10/2025 7:44 pm
LarGriff
(@largriff)
Reputable Member
RE:

Just a thought, but could you attach extra squares so that all of the probed points are the same height?  Might be easier than modifying g-code.

Another approach might be to simply add the polymer thickness to the z-offset.

This post was modified 22 hours ago by LarGriff

MK4S/MMU3

Posted : 18/11/2025 3:13 pm
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