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How to Drill Granite
Post Date: 05 May 2009 Viewed: 878
How to Drill Granite
Granite is a beautiful and colorful rock used as a building material. It is placed as floors and countertops in kitchens and bathrooms. It is very solid and dense and difficult, yet not impossible to drill through. Granite rock has an even texture and a light color. It is mainly comprised of feldspar and quartz. Depending on the type of feldspar found in the granite, you might find the rock to be light gray, pink or dark gray. Some say that granite was solidified from molten rock, but others say granite shows little if any contact with surrounding wall rock. They determined that granite, one of the oldest known rocks on earth, gradually just came to be.
Step 1
Insert a core drilling bit into your drill motor. Do not use a masonry bit. They are not strong enough to adequately drill through granite.
Step 2
Place a white bottle cap--one you would find on a medicine bottle--over the area on the granite where you will drill. The cap opening must face up.
Step 3
Press a plumber's putty around the base of the medicine cap. The putty will hold the cap in place and form a damn around the cap.
Step 4
Pour any type of oil into the cap up to 1/4 inch from the top. The putty will keep the oil from leaking out onto the granite.
Step 5
Position the drill bit inside the cap with oil and begin to drill. Let the drill spin for 10 seconds, then allow the drill to sit in the oil and cool down for 10 seconds.
Step 6
Continue drilling for 10 seconds and cooling down for 10 seconds. Alternate the procedure until you've drilled through the granite.
