Tonight I was running a job with 1.5mm acrylic. A majority of the items didn't cut through as completely as usual. It almost goes through but I have to force the pieces out of the sheet.
But - 3mm wood is cutting fine (thanks Mike for the great Birch!) as well as the 3mm acrylic. I adjusted the settings to the same as 3mm acrylic and the same results! I don't feeling like spending $2K on a new laser tube if the problem is with the materials. As far as the speed goes for my 35W Epilog it is 25 (1.5mm) vs. 12 (3mm.)
I'm scratching my head on this one folks. Any suggestions?
Ed