As a quick aside, I decided to do a test to see how PG thin maple holds up to mildly excessive cutting. I took one of Monica’s more complex patterns, and resized it to about 5.5 inches per side (originally a bit over 7 inches).
Once cut, the remaining wood lines are 1.1mm thick (3/64ths inch), and so far it’s proving to be pretty durable. The laser didn’t make it quite all the way through in a few spots, so there are two locations on the back where the piece suffered “tear out” — a plane of weakness in the wood, combined with an incomplete cut, resulted in some of the wood tearing off, almost breaking through the piece.
…which, actually, I consider to be a mildly impressive achievement for wood. With due care (up the power a bit over the PG defaults to guarantee full cutting), I think you could go below 1mm in the maple and still have it hold together.
I cut it for the same reason, also on the PG maple, and the inner lines are just a hair under 1mm. I thought about using some scraps to try simple test cuts that were even thinner, but that’s as far as I got (thinking about it!)