Laser power control overshoots to maximum when setting a laser power?

[rustyssjones]

You can read Brent’s description of SM’s laser behavior here.

GrayScale on cardstock Puzzlement

I’ve been running numerous grayscale tests on cardstock using Lightburn instead of Luban. I’ve ran a speed test vs power and settled on S800 at 15-85% power with .18mm Line Interval (distance between two lines). This gives me a good dark and an acceptable white spread. On the test matrix speed 800mm/min does not burn through even at 100% power and I’m using 85% max. So it baffles me when I’m now burning through my image with 85% power. Why would a solid square at 85% not burn through, but an…