Diamond Hole Saws for Glass & Ceramics

A diamond hole saw used with a low-speed drill and continuous water cooling is the best tool for cutting holes in glass. The diamond abrasive edge grinds rather than chips the glass, resulting in clean, accurate openings. For glass tile or decorative glass panels, a pilot-guided diamond hole saw provides added stability and precision during the cut.

Mark your cut location and secure the glass on a flat, stable surface. Attach the diamond hole saw to a variable-speed drill and set it to a low RPM. Apply a constant stream of water to the cutting area to cool the bit. Begin drilling at a slight angle to establish a groove, then straighten and maintain steady, light pressure until the cut is complete.

DI Tool offers diamond hole saws in a range of sizes to accommodate plumbing, electrical, and decorative installation requirements. Options include both standard hole saws and hole saws with pilot bits for guided, accurate cuts. Refer to individual product pages or contact DI Tool directly at (800) 678-8006 for specific diameter availability.

Diamond hole saws for glass and ceramics require wet cutting. Water acts as a coolant, preventing heat buildup that can crack the glass, and also flushes away debris from the cutting zone. Attempting to cut glass dry will significantly shorten the tool's lifespan and risk shattering the material. Always use adequate water flow throughout the cutting process.

Yes, diamond hole saws are highly effective on porcelain and ceramic tile. These materials are hard and brittle, making diamond the ideal abrasive for clean, precise circular cuts. DI Tool's hole saws are part of a broader tile blade lineup engineered for porcelain, ceramic, granite, and glass tile across flooring, wall, and backsplash installation applications.

When cutting glass with a diamond hole saw, use a low RPM setting — typically between 500 and 900 RPM depending on hole saw diameter. Larger diameter hole saws require slower speeds. High RPM generates excess heat that can crack the glass and damage the diamond matrix. Pair low speed with continuous water cooling for the best results and longest tool life.