Things You'll Need
- 40 mm diamond tipped drill bit
- Electric drill
- Drill plate
- Sponge
- Smooth rounded file
- Black marker
Instructions
Mark the location of the inlet and outlet holes using the drill plate and a black marker. The holes should be located as close to the top of the tank as possible to avoid cracking the glass.
Hold the drill plate on the location where the inlet hole is to be drilled.
Slowly drill the hole using a forty millimeter diamond coated drill bit. According to 365 Drills.com using slower drill speeds in conjunction with a drill plate will allow the drill to chip away at the glass without slipping.
Keep the drill bit turning and keep slight pressure on the bit until the drill bit works completely through the glass. Complete this process with the outlet hole.
Smooth out any sharp edges on the inlet hole using a fine cut round file. Complete this process with the outlet hole.
Wipe the tank clean of any glass shards created by cutting the holes.