Hello there. I am using lightburn to control a spindle machine using GRBL-M3. So far so good, my only problem was that spindle takes some time to ramp up and stop, so instead of using M3 and M5, I made a GCODE post processor to remove any of these commands and open/close the spindle manually.
Now that I need to use Fill function from lightburn though, I observe the following problem.
Fill or flood fill function sometimes split a part into smaller parts (lets name them islands), depending on the geometry of the original part. In this case, while changing position from island to island, there are no G00 movements, meaning that the spindle does not turn off (in this case I have already bypassed the problem), neither the z relative moves (up and down) are triggered. The last one is responsible for seeing 1 line on the part conecting both islands. When I was using my galvo laser marker, I also remember the same behaviour when using these functions. Even when I was using the “laser mode on”, the laser seems to need some time to cool down and fire up again, leaving marks on my print this way.
My point in this topic is to know if this problem has been reported again, and if this is the case, is there any work around to trigger z movements in between the “islands”?
Note: I am in version 1.7.08 and option “Optimize z moves” is disabled.