How to drill holes in flagstone

Written by dan zisko
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How to drill holes in flagstone
Use a hammer drill to bore through hard surfaces like stone. (pflaster image by Dron from

When you think of drilling, images of drill bits being forced through wood probably come to mind. However, wood is not the only material which can be drilled through. With the right tools, you can also bore holes through harder material, like stone. To drill through a material like flagstone you will need something called a hammer drill, which puts extra pressure on the stone and makes it easier to get through the hard surface.

Skill level:

Things you need

  • Flagstone
  • Hammer drill

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  1. 1

    Choose a bit for the hammer drill and insert it into the hammer drill. This type of drill uses special bits. Make sure your bit is one that can be used with this type of drill.

  2. 2

    Place the tip of the drill bit on the stone where you will be drilling. Slightly press the trigger to start the drill in a slow motion. Bore a small hole in the stone on this slow setting.

  3. 3

    Increase the speed of the bit as you get farther into the stone. Press the bit into the hole and continue to bore into the stone.

  4. 4

    Keep pressure on the bit until it passes through the stone. Hold the drill trigger down and pull the bit out of the hole.

Tips and warnings

  • Change the direction of the bit every 10 to 15 seconds or so in order to remove stone chips from the hole.
  • Be prepared for a slight back-and-forth motion of the hammer drill, as this is what allows it to get through the stone.
  • Do not place too much pressure too quickly on the stone or you risk cracking the entire piece of flagstone.

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