How do you enlarge a hole in a granite countertop?

Asked By: Jasmeen Grondmann | Last Updated: 5th March, 2020
Category: hobbies and interests woodworking
5/5 (1,445 Views . 37 Votes)
Normal Bit
When enlarging an existing hole, merely choose a larger bit according to the size you need the hole to be. Center the drill bit on top of the other hole and drill down through, letting the bit eat away at the sides and carve out a larger diameter.

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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.

33 Related Question Answers Found

Can you file porcelain?

Due to the fact that they are man made by heating clay at high temperatures, porcelain tiles are resilient and water resistant. When necessary, these can be be polished with a tile file, providing a smooth and finished appearance to visible edges.

How do you drill a hole in a porcelain toilet?

Drill smooth holes through ceramic toilets.
  1. Mark the placement of the hole directly on the toilet.
  2. Place two to three layers of masking tape over the mark and redraw the mark on top of the tape.
  3. Install a carbide or diamond ceramic-cutting drill bit into a power drill.
  4. Position the drill bit on top of the mark.

How do you cut a hole in a porcelain sink?

How do I Drill a Ceramic Porcelain Sink?
  1. Apply a single layer of masking tape to the entry and exit sides of the ceramic porcelain sink where you intend to make the hole.
  2. Mark the hole size and location with a permanent marker.
  3. Attach the appropriate-width diamond drill bit or diamond hole saw to the electric drill.
  4. Protect your eyes with goggles.

How much is a diamond drill bit?

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What is a diamond hole saw?


Diamond hole saws are designed to drill holes in glass, ceramics, porcelain, ceramic and porcelain tile, limestone, slate, marble, granite, stone, and fiberglass.

Can you drill holes in Corian?

Though many kitchen and bathroom sinks have predrilled holes, this is not always the case with Corian® or other solid surface products. Corian® is drillable with standard drill bits and hole saws and is moderately difficult to break. However, you must be careful not to mar the surface when drilling.

Can I put a screw into Corian?

Corian is plastic, after all. It is recommended not to use wood screws or sheet metal screws, because the material cannot expand around the screw, like wood or metal. To install a Heli-Coil in Corian, you would drill out a pilot hole for a tap; tap the hole; and then install the Heli-coil in to the newly tapped hole.

Can you fill a hole in Corian?

Using an abrasive pad sold specifically for corian countertops or the rougher side of a sponge, thoroughly clean around the hole. Try to buff out any scratches that may be present. Let the area dry.

Can Corian countertops be recut?

When you order a Corian countertop, it usually comes precut to the size you specify, but if things change during the installation procedure and you need to cut it, you can do it with virtually any saw that cuts wood, including a circular saw. To use a circular saw, you need a blade that can handle thick plastic.

Can I cut Corian with a jigsaw?


Just don't let the corian guy catch you cutting corian with a jig saw. That's a big no no with them. I used to to be certified to fab corain and they forbid us to cut with a jigsaw. It can cause the corian to crack.

Can you sand Corian?

There are countertop repair kits with color-coded, micromesh pads designed to sand scratches out of Corian. You can buy them on line, or possibly from your local friendly Corian dealer. Or try wetting the scratched area and sanding with a 400-grit, wet-dry sandpaper. Actually, he's not that keen on Corian at all.

How do you drill a hole in a countertop?

How to Drill a Hole in a Laminate Countertop
  1. Decide where you want to make a hole through the countertop.
  2. Equip the electric drill with the correct-diameter drill bit.
  3. Place the tip of the bit on the mark you made on the masking tape.
  4. Squeeze the drill trigger slightly, allowing the bit to penetrate into the laminate material at a slow speed.

How do you make a hole in fiberglass bigger?

Drill (hole saw) the larger hole in a board. Place that over the existing smaller hole, and let the larger hole guide the hole saw. Find a hole saw that cuts a plug that will fill the existing smaller hole. Put that plug on the drill bit of the larger hole saw and let that plug keep the larger hole saw centered.

Can I drill a hole in my granite countertop?

Drilling through granite isn't complicated if you have the right kind of drill bit, although it's more time-consuming than drilling through wood. It takes time to penetrate the hard stone. Put on gloves, safety goggles and a dust mask. Attach a diamond-tipped hole saw bit to your power drill.

How do you drill a small hole in granite?


Drill using a carbide bit slightly larger than the screw diameter. Carbide tipped bits last longer than masonry bits, but cost more. If there are many holes use carbide (they will also drill faster if the drill has an impact or hammer selection switch).

What does it cost to drill a hole?

Cost data is based on research by HomeAdvisor. Drilling a well costs $5,500 for an average depth of 150 feet. Most projects range between $1,500 and $12,000. Expect to pay between $15 and $30 per foot of depth, or up to $50 for difficult terrain.

How much does it cost to cut a sink hole in granite?

Cost to Install Granite Countertops in the Kitchen
Factor Cost
Sink Cut-Out $100
Materials (excluding granite) $100-$200
Granite $1,200-$2,400
Estimated Total $2,000-$4,000