Originally shared by John Milleker Jr.
I wanted to share this test photo engrave made on a Chinese K40 Laser running the Cohesion3DMini controller (running GRBL-LPC, but Smoothie can do this too, I changed firmware just because skipping issues with my machine). 3mm Baltic Birch plywood, two passes. Lightobjects head with air assist. LaserWeb4 on a Raspberry Pi 3.
I think I’m darned near ‘there’. This is as dark as I can get birch without really tanking my speed. This is two passes at 150mm/s.