Jeez... I wonder how difficult it'd be to rig up a device which just needs a level above-ground surface to mount the laser onto to be guided on to cut gypsum drywall (can it be burned through like that, even?). It can't be any more difficult than it is for me to trace it and cut with a dremel. I screw it up every freakin' time. Flooring would look like crap if I didn't get to stuff the edges under trim and the toilet. I always measure twice, so I must be fucking up thrice.