Using M3 rather than M4

LightBurn Software Questions
1

Hi everyone,

I get much better cuts by using M3 rather than M4 with my laser. Currently I have to edit the gcode by hand, is there an option somewhere in LightBurn to change it ?

Thanks !

2

There’s 2 options:

  • Switch to using the GRBL-M3 profile which will only ever use M3
  • Use the regular GRBL profile but in the Cut Settings window choose “Constant Power Mode” which is near the power settings. That lets you use M3 just for that layer so you can mix it up in a single job.
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