Hi.
I was analysing different examples of laser working on Acryl (PMMA) and found one interesting thing.
At the first picture we can see vaporized material and melted edges.
At the second example we can see situation like material was boiled and then frozen.
All that work was made on CO2 laser engraver/cutter.
How can I reach the second result? What parematers should vary to accomplish that? Power, speed, focus distance? May be cooling of cut point?
Any ideas?