Cutting glass is a difficult process and requires some finesse. However, with the right tools it is possible to learn the tricks to cutting glass--perhaps not with ease, but at least with competence. Glass cutting requires the use of diamond cutting bits, one of the few materials that can actually cut into glass. Diamond bits are found at most hardware stores. Safety is the most important issue with glass cutting, even with Mason jars, and it is important to always wear safety goggles and gloves when drilling through glass.
Things You'll Need
- Safety goggles
- Variable speed drill
- Diamond cutting bits in various sizes (1/8th of an inch as the smallest)
- Mason jar
- Safety gloves
- Cutting oil
- Permanent marker
- Cloth or rubber mat
Plan where you want to place the holes in the Mason jar. Do not place any holes within 3/4 of an inch from any edges of the jar, including the bottom edge, or place holes within 3/4 of an inch from each other. This limits hole placement to close to the middle of the jar. Mark the placement of the holes with a permanent marker.
Place the Mason jar on a flat surface. Make sure the jar is well supported, and will not slide around on the surface. Use a cloth or rubber mat to hold the glass still.
Place the smallest drill bit inside the drill. Spread cutting oil over the drill bit. Drill into the glass slowly and carefully. Use constant pressure as you drill through the glass.
Stop drilling just before you break through the glass. Reduce the amount of pressure that you apply on the drill as you drill through the last section of glass.
Replace the small bit with a larger one. Cover the surface of the bit with cutting oil. Drill through the same holes in the same place.
Gradually increase drill bit sizes until you have the hole size that you want for all holes.