I made an assortment of acrylic step gauges with 1/2 mm steps. I find “best focus” for a given lens and then mark the correct step with a sharpie. It makes it easy to adjust focus and to “subtract” focus height for thick materials.
Here’s a lbrn file for a couple of the ones I made. focus gauge 10a.lbrn (219.1 KB)
Pro TIp: Make them out of brightly colored acrylic instead of clear, because when you lay the clear ones down they “hide” and play hard to find.
Hi,
I have a 100W CO2 laser, i cut acrylic 20 mm with a speed of 3mm/s and 65% of power in 1 cut.
When i try to go faster then i need a secund pass.
You can see on the letter R that i needed 2 passes, the circular block was obtained with a speed of 3mm/s and 65% power. Speed isn’t always the best.
