Diamond Grit Hole Saws for Tile, Stone & Glass

DI Tool offers Diamond Hole Saws and Hole Saws with Pilot Steel attachments. These vary by diameter to suit different fixture sizes, and are designed for use on tile, porcelain, granite, and glass surfaces. Each type is suited to specific applications — from plumbing cutouts to decorative fixture installations in residential and commercial projects.

Diamond grit hole saws are designed to cut through ceramic tile, porcelain, natural stone including granite and marble, and glass. Their diamond-bonded cutting edge handles hard, brittle materials that standard bi-metal hole saws cannot. Always match the hole saw specification to the material hardness for optimal performance and tool longevity.

Yes, water is strongly recommended when using diamond hole saws on tile, stone, and glass. Water acts as a coolant, preventing the diamond grit from overheating and degrading prematurely. It also reduces dust and helps flush out debris from the cut. Dry cutting may be possible on some softer ceramics but will significantly reduce tool life.

For diamond hole saws on tile, stone, and glass, use a low to medium drill speed — typically between 600 and 900 RPM depending on material hardness. Harder materials like granite and porcelain require slower speeds to protect the diamond grit. Avoid high speeds, which generate excess heat and can crack glass or damage the saw.

Common sizes for plumbing and electrical fixture cutouts range from 1-inch to 4-inch diameters. Faucet holes typically require a 1-3/8" hole saw, while larger pipe penetrations may need 2" or more. Always check your fixture's specification sheet for the required hole diameter before selecting a hole saw size.

Yes, diamond grit hole saws are suitable for cutting holes in glass tiles used in backsplashes and decorative installations. Use a low drill speed, keep the saw well-lubricated with water, and apply gentle, consistent pressure. Avoid pressing hard to prevent chipping or cracking. Starting with a guide template helps ensure accurate placement on slippery glass surfaces.