Hmmm, I would have thought this would have been way too great a depth for laser cutting, but I gave it a quick try on my little K40. It was a REALLY nice cut on the top surface, right at the laser’s focal length, but here’s how the cut looked from the back side:
I would obviously need something with a lot less beam divergence for this to produce usable results. I’m not sure that a laser with all the necessary safety covers, and a 22x17" bed, would be in my price range anyway. Thanks for the suggestion, though!