Review on 💎 Bathroom Drilling Diamond Ceramic Porcelain by James Gregg

You will need to make or buy a template recommended for cutting granite etc - otherwise it will wobble and not stay level. Even if you had a "mandrel type" with a diamond or carbide bur, you would still need some sort of jig to keep it level as the bur would "walk". I think this is a cheaper option for a diamond hole saw than an arbor. On a countertop, you can use a hole saw of the same size to cut a hole in a piece of wood, allowing the piece of wood to fit snugly against a backsplash or wall, making it easy to hold the wood with one hand and drill anything else. . Pour some water into the opening of the holder. Once you are 1/8 inch deep in the granite you can skip the wood and continue spraying water down the cut and onto the saw.