I use this tool to carve a recessed river in a patio table, fill it with a small river rock and then fill it with resin. The beat still cuts well. But after about 1/2 hour of use, the set screw that held the bearing in place (I read this happened in another review) came out. I was really lucky to find the set screw and put it back in to make sure it was tight this time. 2-3 hours of work on the project and the beat still cuts really well. So far cut 8 feet, about 5 inches wide and 3/8 inch deep. You should be able to complete a project with this bit, overall depth of cut is about 3/4 inch giving several different depths of cut.