Mesh Bed Leveling GCode G80/G81 not implemented yet
 
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Mesh Bed Leveling GCode G80/G81 not implemented yet  

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MarkusRe
(@markusre)
Active Member
Mesh Bed Leveling GCode G80/G81 not implemented yet

My Y-carriage/heatbed seems to me not very even. I feel the Z-axis moving even printing a 2cm² square. I have done the "nylon-nut" hack on my MK3S with great success. But sending G80/G81 to my MINI FW 4.01 results in unkwon command. Any time frame this will be available in the firmware?

Posted : 23/12/2019 12:24 am
Koen Kooi
(@koen-kooi)
Eminent Member
RE: Mesh Bed Leveling GCode G80/G81 not implemented yet

Does G29 work? Have a look at http://marlinfw.org/docs/gcode/G029-ubl.html for the details.

Posted : 24/12/2019 9:49 am
MarkusRe
(@markusre)
Active Member
Topic starter answered:
RE: Mesh Bed Leveling GCode G80/G81 not implemented yet

Thanks a lot for you advice. Result:
Bilinear Leveling Grid: 
        0          1           2          3
0 -1.192 -0.757 -0.357 -0.048
1 -1.252 -0.724 -0.309 +0.039
2 -1.352 -0.780 -0.229 +0.242
3 -1.492 -0.722 -0.136 +0.442

Seems there are nearly 2 mm room for improvements 😮 

Posted : 24/12/2019 8:15 pm
Crawlerin
(@crawlerin)
Prominent Member
RE: Mesh Bed Leveling GCode G80/G81 not implemented yet

Would something like nylock mod work?

Posted : 25/12/2019 5:16 pm
Neolker
(@neolker)
Member
RE: Mesh Bed Leveling GCode G80/G81 not implemented yet

Does it worth it (nylock mod)? Do not forget, that M.I.N.D.A can measure distance only to the steel sheet, but ignore the thickness of PEI and especially glue between the PEI and steel sheet, which may vary.

Posted : 26/12/2019 2:35 am
Crawlerin
(@crawlerin)
Prominent Member
RE: Mesh Bed Leveling GCode G80/G81 not implemented yet

I do not know, that's why I ask 🙂 Bed does seem to have calibration points, but whether those are actually being used, will be used in future firmware, are just painted and not functional or not needed at all - that's yet to be determined. Currently automatic bed leveling is done with sheet, and there is no geometry calibration (skew) available as part of setup. Possibly that's intended as of now, to simplify things for both beginners and developers. 

Posted : 26/12/2019 4:50 am
Bodo
 Bodo
(@bodo)
Estimable Member
RE: Mesh Bed Leveling GCode G80/G81 not implemented yet

In Octoprint's bed level visualizer for the MINI, we're using these:

G28
G29

while the Mk3 needs these:

G80
@BEDLEVELVISUALIZER
G81
Posted : 28/12/2019 2:37 pm
d3oliht liked
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