No way to cut 2mm transparent acrylic glass?

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.

Clear acrylic doesn’t absorb enough energy for it to cut.
Diode lasers like the SM are the wrong wavelength. You need a CO2 laser for that.

Have to use cnc.

-S

A pity, I suspected as much. Cut with CNC now… went fine except that I forgot to shrink each path by the diameter of the drill (1.5mm) :-E

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