Porcelain Tile / September 5, 2018 / Brousseau.
Drilling Small Diameter Holes (10mm or Smaller) with Carbide Bits. Firstly mark where the hole will be drilled on the tile using a marker. Attach a carbide drill bit to your drill. Ensure that there is a constant supply of cold water that is being directly aimed at the selected drill bit i.e. by using water cooling equipment. Note regarding water cooling. It is important to ensure that there is a constant supply of cold water in order to keep the drill bit cool and to help remove any debris that may have built up whilst drilling the tile.
The Armeg PTC Diamond drill bit range boasts diamond core drill bits that are capable of cutting hundreds of holes in all grades of porcelain. They feature thin wall continuous diamond crowns for and fast and efficient cutting and an extended life. These diamond cores are not to be confused with short-life diamond grit alternatives. Not only do these diamond drill bits cut porcelain they also cut materials such as marble granite travertine slate quarry tiles ceramic tiles natural stone and limestone.
There are some types of porcelain tiles that are quality made and do have characteristics that are vastly superior to ceramic tiles. You should always only shop for quality name brand tiles at quality tile shops to ensure that you are truly getting a quality product. Ask many questions at the tile store and ask to see as many samples as possible before you actually purchase them. Remember that many times you will be paying a premium for porcelain as opposed to just normal ceramic tiles. In many cases especially with indoor tile installations ceramic tiles will perform just as well at a much lower price.
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.