I just got an reverse osmosis filter. The first step in installation is to make a one and a quarter inch hole in the sink top for it's faucet. I bought a bimetal hole saw of that size and proceeded to try to drill a pilot hole with an 1\\8 inch metal bit...no luck. Tomorrow I'll go buy something else for the pilot hole. I'm thinking I may need an abrasive bit for the porcelain layer and then switch to the bimetal. Anybody know?
- posted
17 years ago