Angle Grinders for Tile Cutting

4-inch

• Both 4- and 4-1/2-inch angle grinders run on similar or equivalent rpm, but 4-inch angle grinders are physically lighter than their larger angle-grinder brethren. This makes them a good choice for prolonged use and avoids the DIY hand fatigue associated with heavier angle grinder models. Attach a 4-inch smooth-rim diamond blade to a 4-inch grinder for cutting glazed ceramic or porcelain tile. Use a ribbed or serrated diamond blade for cutting dense natural stone and concrete-based tile.

4-1/2-inch

• Angle grinders measuring 4-1/2 inches are heavier than the 4-inch models and can be equipped with a larger, meatier blade. Use a 4-1/2-inch grinder for cutting thick, dense stone and tile and for cutting into concrete tile underlayment. Attach a serrated diamond blade for cutting dense materials; use a smooth-rim blade for manufactured tile. Use a tile stone to clean --- or dress --- a diamond blade, extending its use and longevity.

7-inch

• Seven-inch grinders are the granddaddy of angle grinders, used in heavy tile applications --- large component tile and granite slabs. A 7-inch grinder offers additional torque --- in many models twice the amps --- and can be equipped with a large 7-inch diamond tile-cutting blade. You can also adjust the speed of many 7-inch grinders, making them superior for bullnosing, edge grinding and diamond-pad polishing.

Precautions

• Angle grinder manufacturers stress that you should always wear gloves and eye and ear protection while using a tile-cutting angle grinder. Removing the protective blade shield is hazardous and not recommended under any circumstances. Do not force a cut --- an angle grinder's blade will bind and kick the tool back if you force it into an angle cut. Never use an angle grinder in a wet area; doing so risks electric shock.