G26 gcode command

Snapmaker 2.0
1

https://snapmaker.github.io/Documentation/gcode/G026 says that “G26” is used to print a “mesh validation pattern”. When I try to run it from a terminal after an 11X11 level, I get an “unknown command” error.

Am I missing something?

2

That’s because they copy/pasted the Marlin documentation with few updates. G26 isn’t available, as the firmware is compiled without G26_MESH_VALIDATION

3

Darn. Probably no way to enable G26_MESH_VALIDATION, recompile and feed it to the SM I imagine.

Thanks.

4

It’s not hard, but why? It’s easy to spot check the mesh using G42 at the control points, and if you want a single layer print slice the 25mm test cube scaled up as big as you need and delete everything after the first layer in the file.

5

That’s too easy. I’ll give the cube a try.

:slightly_smiling_face:

6

I think technically G26 uses a sparse first layer to speed up printing. I wonder in Cura if there’s a way to get the first layer skin to be <100% fill. I feel like there is but I’ve never tried.