You may need to occasionally drill into glass for a craft project or a repair around the home. Fortunately, this is a simple, quick project that most crafters and homeowners can do with just a drill, a special type of drill bit, and plenty of water.
Crafts such as hanging wind chimes, projects with wine bottles or Mason jars, or making glass jewelry are common tasks where you may need to drill into glass.
Basics of Drilling a Hole in Glass
Drilling into wood or plastic is a familiar project for many people. Other than adjusting for the hardness of the material, this is a straightforward task. Drilling into glass is different because the speed of the drill must be kept slow to control the temperature. If the glass gets too hot, it may break. In addition, starting the hole can be tricky since the drill bit has a tendency to skitter across the surface.
A continuous stream of water on the surface helps lower the temperature of the drill bit and the glass. An assistant can carefully pour a thin stream of water over the surface as you drill. Or you can use a plastic jug that leaks a steady stream of water, as described in this project.
Purchase a carbide-tipped drill bit for the best results.
Drilling into glass is hazardous. Be sure to wear safety glasses, gloves, and a dust mask at all times. Glass dust is very harmful, so never breathe it in, and keep it off of your skin. The constant flow of water will help hold down the glass dust and wash it away.
Only use a cordless drill. Do not use a corded drill as this presents a shock hazard when used in conjunction with the water.
Source: The Spruce