Ok, first cut was today and was very straightforward, hooked up the water pump and fan and cut a few circles. No electrocution, no burning down the house, didn’t laser my eyes. And the software actually isn’t so bad, it just looks bad, there isn’t much for instructions and there is a lot of hard to understand parameters but there seems to be only a few that you need to get cutting. X/Y origin, speed and # of passes.
I burned some nice circles into a piece of wood then tried to actually do the cut I wanted in a thin rubber mat (used as grip at the bottom of a housing). First few passes just kind of melted the top layer, then as I ramped up the power I mostly just set the rubber on fire (see pic). Soooo, glad to do that on a $300 laser and not a $3000 laser! I might need to wipe the mirrors, but they still look clean.
I’m very happy to have picked up the K40 to get started now though. I can start working with the materials I need now (and screw up at low cost!) and I’ll have a better idea how the GF stacks up when it comes in. I like the idea of not needing the water pump and the GF filter looks like it should work a lot better than the K40, and hopefully the cloud software works better.
Can anyone suggest what parameters work best to cut 3 mm acrylic and a 0.5 mm rubber (no chlorine in it but not sure the actual material)? What power level / speed / # of passes might be needed? I have the mA dial that goes from 0 to 30. I suspect the focal point might not be at the exact right height either.