o I wasn’t trying to laser on a gecko! To get some E2 testing I decided to make things a little more interesting and use MC Escher’s gecko tessellation for my test sample. The cardboard was 0.6mm thick cereal box and the acrylic was 3mm thick black. For the markings I defocused the laser so I could get a wide mark in one pass. Messed with a medium blue 3mm and a 2mm translucent red, neither cut, though the translucent red engraved beautifully.
The 3mm black acrylic was 150mm/min, 100% power, 4 passes, air assist. It cut almost completely in 3 passes, but needed a knife in a couple of spots to finish the job, so going to 4 passes next time or a slower feed. For the engraved parts I told laserweb it was 10mm thicker then it was, 1 pass at 75% power.
0.6mm cardboard would not cut if the air assist was on. 1000mm/min, 100% power, 1 pass. For the engrave I added 5mm to the height and bumped the power to 40%.
I plan on using the gecko for all my testing, could make for an interesting pile to play with.