My first post, apologies if I have netiquette incorrect.
I have a Banggood laser engraver with a 3W led laser diode. Arduino controller with grbl1.1h firmware.
I use the laser to cut thin balsa.
With gbrl driver, what happens is when cutting complex curves or circles, the laser movement stutters, never reaches full power and the result is only a partial cut. When it is stuttering, laser power drops to a very low value. When multipass is used, the stutters are in the same place. The input file is autocad 2000 dxf format.
If I set $32=0, I get full power permanently as expected but the stutters in the same place then overburn the cut.
The interesting thing is that if I create a simple drawing using the lightburn drawing tools, in this case, a box with an intersecting circle and a few random overlapping lines, the laser behaves as expected, power looks normal and there is no stuttering.
On the DXF file, I have grouped all the arcs to form a contiguous curve but that made no difference. This video shows what is happening
Any thoughts or suggestion? I am running the latest version of lightburn on a newly built laptop