How do you enlarge a hole in a granite countertop?

Also question is, how do you enlarge a hole in ceramic?

How to Make the Hole Wider in a Porcelain Sink

1. Size up the hole with a diamond-tipped drill bit.
2. Place the bit into your drill and press the bit slightly into the hole.
3. Begin drilling at slow speed.
4. Use a diamond-cutting hole saw if the size of the hole cannot be achieved with drill bits.

One may also ask, how do you enlarge a hole in concrete? The metal on a wood rasp would be way to soft to make any type of dent in the concrete. The only thing you will do is destroy the rasp. You should use a roto hammer with the proper sized bit to widen the hole. Yes, you can and it will work.

In this manner, how much does it cost to drill a hole in granite?

To drill granite, you need a diamond core drill. I recently purchased a 1/2 inch diameter one, cost me about $20, and I drilled a hole through a granite countertop. In your case, your may be looking at a 2 inch diameter bit, considerably more expensive, but they work the same.

Can you drill through porcelain?

Porcelain is a type of ceramic that has a baked-on glazed finish with a porous inside. The glazed finish is tough and waterproof, which is why porcelain makes an ideal sink. A regular drill bit will dull quickly, and a hammer drill bit shatters the porcelain instead of drilling through it.