Professionally drill glass


The drilling of glass is for many DIY enthusiasts to the work, which preferably goes out of the way. Too big is the fear usually that the glass could break. The drilling of glass with the right tool is not that difficult. With a little skill and experience, drilling glass becomes easier and easier.

Drilling glass - not so extraordinary

For home improvement there are many reasons why glass has to be drilled again and again. The drilling of glass is even more commonplace than some would expect.

  • Drilling glass tiles
  • Drilling of glass-like porcelain stoneware tiles and tiles as well as ceramics in general
  • Drilling porcelain
  • Drilling various glass panes (aquarium, furniture, window glass, etc.)

The different glass drills

Depending on which glass or glass-like workpiece you would like to drill, different glass and ceramic drills are used.

  • simple glass and ceramic drills
  • special diamond glass drill

Drilling with simple glass and ceramic drills

The construction of a conventional glass drill is simple. In a stainless steel shaft with a notch a lance-shaped tapered carbide plate is welded or soldered. Because of this hard metal plate, these drills are also referred to as carbide glass drills.

The scratch hardness is crucial

Decisive in the carbide is the so-called scratch hardness. This is slightly above the scratch hardness of plain glass. Therefore, the use of these drills is limited to simply glazed materials. To drill special glass such as the tempered glass of furniture, door cassettes or aquariums requires a diamond glass drill.

Drilling with the diamond glass drill

The diamond glass drill looks completely different. It consists (often of a hollow) steel shaft whose circular tip is set with diamonds or diamond fragments. To prevent this drill from wearing too fast, it must be cooled permanently with a coolant during the drilling process. In addition, the coolant also removes the heat generated on the workpiece.

Working with the diamond glass drill is a bit more complex

Thus, thermal stress is removed from the glass and achieved a better compensation of the drilling edge. You can cool the diamond glass drill differently.

  • Coolant lubrication from outside
  • Coolant lubrication from the inside
  • Coolant lubrication from inside and outside
  • manual coolant supply
  • automatic coolant supply

There are floor drilling machines where you can insert a coolant can in front of the drill chuck. Through the hollow glass drill, the coolant is also used on the inside of the drill. In contrast, if the coolant is only supplied from the outside, you must interrupt the feed and raise the drill head so that the coolant can also run into the interior.

Do not underestimate the coolant effect

The cooling is not only important to take the already mentioned tension from the material to be machined or glass, so it can not break. Of course, these diamond glass drills are a bit more expensive to buy. Without cooling, you would shorten the downtime (periods of use) significantly, which ultimately becomes a cost issue again.

Tips & Tricks

For drilling glass and ceramic tiles, a simple ceramic or glass drill is sufficient. For porcelain stoneware and hard glass, a dedicated diamond glass drill is definitely a better choice.

For hand drills the specialist trade also offers systems for the supply of coolant. In addition, different constructions for fixing the drill on the cuttings (for example by means of suction cups).

For aquariums, drill only the ceiling or cover glass plates. The side and bottom plates must not be drilled, as the entire statics of the glass changes due to the bore, especially under the pressure of water and deposits (sand, stones, etc.). There is a risk that the aquarium will literally burst.

The house journal offers a number of different articles on drilling, for example, for drilling stainless steel.


Video Board: Cutting Holes Through Glass Experiment