Hi there,
I used chalk spray that creates a homogeneous matte surface on 2mm acrylic disc, and after a failed attempt to cut it with the 10W using Luban’s default 2mm acrylic preset, I tried a second time at half speed (90mm/s) and with two passes. Not much difference, you can see a bit of a groove where the chalk remains when you rub it off, judging by my finger nails, this went around 0.2mm into the material. Is there a trick to make this work? I know I could use the drill, but changing the platform is so much work, and I would like to keep doing this with the laser if possible.
I was cutting the thicker wood sample without problem, so I think laser is well calibrated. I entered thickness by hand.