Porcelain Tile / July 9, 2018 / Brousseau.
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.
Some of the more common issues that cheap porcelain tiles can have include: Cheap porcelain tiles can actually be extremely porous and difficult to clean. They will absorb all types of dirt spills and contaminates. These types of porous tiles will start to show dirty spots especially in heavy use areas and in the center of the floor where people walk. Soon your floor will look ugly and these types of deeply embedded stains are extremely difficult to clean. Often times it can help to seal these porous tiles but this can be costly and time consuming especially for a product that you thought was dense and would be easy to clean and maintain.
When the shipment arrives they can look vastly different from the ones that were originally ordered. Often the colors and textures can look different from the sample. Other times there may be surface scratches or other imperfections that make them look ugly. Once the shipment arrives at your door it can be extremely difficult to return them and ship them back. Other times the quality control issues are not noticed until the tiles are installed and then the manufacturer will never accept returns on already installed tiles no mater what types of problems they have.
These methods will not keep the drill bits cool enough and will drastically shorten the life of the drill bit. Ensure that the drill is in normal mode and set the drill to between 1000 and 1500 rpm. If you have marked the tile with a marker it is best to drill into the tile using a method called leaning in. Leaning in ensures that the drill will not slip and wander off center as you begin to drill into the tile.