I was in Home Depot today looking for something to laser and found some free cork flooring samples that looked interesting. First try at 1400/50/225 didn’t engrave deep enough. After a couple more tries I ended up at 1000 speed, full power, 225 LPI and got what I was looking for.
They look to be about an 1/8” of cork laminated onto about 3/8” MDF then another 1/16” or so of cork.
Headed back there tomorrow to by some of the flooring to cut up for more projects.