Porcelain Tile / September 14, 2018 / Brousseau
Drilling Large Diameter Holes (13mm or Larger). In order to cut holes that are 13mm or larger in diameter it is necessary to first drill a pilot hole. The pilot hole will act as a locater for a large diamond core and will help you to drill a perfect hole in porcelain tile. Attach an 8mm carbide drill bit or 8mm diamond bit to your drill. Follow the instructions given above for either Drilling Small Diameter Holes (10mm or Smaller) with Diamond Cores or Drilling Small Diameter Holes (10mm or Smaller) with Carbide Bits depending on whether you are using diamond cores or carbide drill bits. Leave out the final step in either case as you wont be drilling a fixing hole behind the tile.
It is not advisable to try and cool the drill bit by using an aspirator or drilling through a wet sponge these methods will not keep the drill bit cool enough and the drill bit will burn out. Set the electric drill to between 700 and 900 rpm. Make sure that the drill is in normal mode. Push the carbide drill bit gently into where you have marked the tile until you hear a cracking sound. Start drilling from a vertical position with sufficient pressure and dont stop until you hear a change in the tone of the drill. As soon as you hear the change in the tone begin to ease off.
Application of tiles are rated according to the Porcelain Enamel Institute (PEI) rating system from PEI Class 1 up to PEI Class 5. If you are looking for the right tiles to be used for your walls or ceiling the PEI Class 1 is recommended because the tiles are not exposed to any impact. You can choose the PEI Classes 2 and 3 for your bathroom tiles and the PEI Classes 3 to 5 as kitchen and tabletops and as flooring in any part of your home or building according to the impact foot traffic or exposure of the area where you will install your porcelain tiles.