So, this is the technical stuff for this post.
I wanted to get smoother MDF engraves that didn’t take an hour each.
I went through all the default settings before experimenting with power levels and whatnot.
When that didn’t help, I decided to try defocusing the laser.
I started at 0.2", then 0.3", up to 0.4" for a 0.118" thick piece of MDF.
I had to increase the power / lower the speed to compensate, but I ended up with a super smooth engrave, that only took 2mins for a 1" diameter circle.
Here’s my experiment log:
It’s missing my headings, so it’s Speed / Power / LPI / Passes