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The Best Drill Bit for Porcelain Tiles

Drilling porcelain and glass requires the use of speciality drill bits. When you drill these you have to keep the bit cool because of the hardness of porcelain and glass. Care needs to be taken when drilling not to vary the pressure used, since this can cause the material to break.

Standard Carbide Tip Drill Bits

A standard carbide drill bit comes in several sizes. This is for use in all rotary and percussion drilling machines. The bit has a carbide tip. You need to use this bit at low speeds, and you need to keep the bit cool as it's being used. You can use water, paraffin, vinegar or turpentine for this. These bits will need to be resharpened often. This is the least preferred choice of bits because it was not designed for this application.

Glass Drill Bit

The glass drill bit comes in several sizes. This is for use in all rotary and percussion drilling machines. The bit has a thinned chiselled edge on a carbide tip. It is used at low speeds, and needs to be kept cool as its being used. You can use water, paraffin, vinegar or turpentine for this. These bits need to be resharpened often.

Diamond Drill Bits

The diamond drill bit comes in several sizes. This is for use in all rotary and percussion drilling machines. The bit is a circular bit with diamonds impregnated into the tip of the bit. This bit cuts fast and stays sharp for a long period of time. It can be cooled with water only. These bits are more expensive than the glass drill bits.

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About the Author

Jim Wildman served in the United States Marine Corps as a Communication Chief for 10 years. After his tour of duty in Desert Storm he attended Oklahoma State University receiving his Bachelor of Architecture. He worked as an architect for 10 years before starting his own design/build company. He began writing in 2009 for Demand Studios and published on eHow.