It seems there is nothing these machines can't do. A month or two ago I brought a sandstone from a driveway and went to work on it. I successfully made a nice looking water bowl which is currently with my obt. Also since my p ornatas are only at Gatorade bottle cap size I wanted to make a water bowl instead of using an ugly bottle cap. I got my dremel and made another awesome water bowl my p ornata is currently drinking out of. I'll post some pics later but right now im on my phone and can't.