Porcelain Tile / September 14, 2018 / Brousseau
Identifying the Size of Hole to be Drilled. The first step is to correctly identify the size of hole to be drilled. This is very important as the diameter of the hole to be cut dictates the method that you will use to drill into the tile. The majority of holes that are 10mm and under in diameter will be drilled with the tile already fixed to the wall. Conversely the majority of holes over 10mm in diameter will be drilled into the tile before the tile has been fixed. When drilling holes that are 13mm or larger in diameter make sure that the tile to be drilled is placed in a tray that will collect the waste water that is produced.
Cheap porcelain tiles can be difficult to properly install. Cheap tiles may look nice on the surface but they may not be able to be cut cleanly with a tile saw and may chip on the edges. Also if the tiles are porous then it will be difficult to clean up the excess grout. Grout haze can become embedded in the tiles and make them look vastly different after they are installed compared to what they looked like before they were installed. Cheap tiles can have quality control issues. Many times people choose their sample tile and then order them.
Now that the pilot hole has been cut it is possible to drill the main (large) hole. Attach the appropriate diamond core and ensure that there is a constant supply of cold water (see water cooling information in the previous sections of this article). Diamond cores that are larger than 13mm will require an adapter with pilot pin that locates into the pilot hole that has been cut previously to ensure the perfect hole will be made. Starting the drill vertically begin to drill in a circular motion with sufficient pressure until the tone of the drill changes.