I'm cutting small pieces out of colored Acrylic sheets on a 60 watt Epilog Helix. If I leave the paper masking on the Acrylic, it's very time consuming removing it afterwards. I don't mind a little "smutzing" on the Acrylic so I've tried cutting without any masking. The top is fine; the air assist seems to keep things fairly clean.
The problem is the bottom. If I just set it on the hex grid, I get flaming under and end up with scorching and impressions of the hex grid. If I set it on wood or cardboard, it's better but still a little scorching.
what else could I use under that won't be affected by the laser? Would foil (Matt side up) be safe? Maybe some sort of ceramic sheet? Any ideas?
Thanks