How to Drill a Hole in a Rock
Rocks come in all shapes, sizes and materials. Some rocks are smoother than others and come contain particles of much harder material. Drilling a hole in a rock is not always a simple task depending on the type of rock you selected, but it can be done with the proper tools and preparation
Instructions
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Select a rock. A soft rock such as limestone or sandstone is much easier than a very hard material such as granite. Choose a rock that fits your need, keeping in mind the difficulty level.
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2
Measure the rock and mark the location for the hole. Be sure to include the exact point for the center of the hole where the tip of the drill bit will be placed.
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Choose a drill bit and drill type. If you are using a softer rock, a masonry drill bit might be appropriate. For harder rocks, a diamond tip drill bit is needed. It is ideal to use a drill press, if the size of the rock is suitable, otherwise, choose a strong drill with plenty of power.
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Begin to drill. Use water to cool down the drill bit. If your rock is very small, it can be submerged in a small container of water. Larger rocks will require water to be poured over the drilling area during the drilling process. Place the drill bit on the marked center point for the hole. Begin to drill, adding water to cool the bit as you drill. Make sure to hold the rock securely as the drilling takes place. Gently push the drill bit into the rock, making sure to continually cool the bit with water. The process can be lengthy, depending on the thickness and hardness of the rock. Do not force the drill bit into the rock; patiently apply pressure to insert the bit through the rock. Continue to remove any particles that have been created throughout the drilling process. Continue gradually applying pressure until the hole is complete.
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Finish the hole. Once the hole has been created, wash the rock thoroughly. If there are rough edges in the hole, use a file to sand them down.
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Tips & Warnings
Always wear safety glasses when using a drill bit Be sure to secure the rock when drilling and keep your fingers away from the drill bit
