You need to be good with a Dremel. You seldom get a second chance. They are handy in my carburetor repair service. They are handy as bead blasters -- cordless drills--power washers--air compressors--cutting torch--parts washers--A good lift --and a cold frig for the beer and a good ac unit. They make life easier. I would hate to be without one. Like a pocket an a shirt.