To cut a material as hard as granite, then you need a diamond-impregnated blade, and also you can fit one of them on a variety of tools, including a circular saw , table saw or palm grinder. A grinder is not difficult to use, but keep the blade moist to avoid cracking the granite.
Prior To You Cut
You need to make a few preparations before starting to cut granite with a grinder. Lay masking tape along the cut line and then trace the line on the tape — this way, you won’t ever eliminate sight of your line. Set a bucket of water nearby, soak a sponge in the water and permit it to weep onto the stone to prevent the blade from overheating. Plug the grinder to a GFCI outlet. Eventually, put on a respirator, gloves, goggles and ear protection.
Cut in Stages
Your 4-inch grinder blade ought to be ranked for granite, which means that it’s a diamond cutting edge edge. It’s ideal to make the cut stages; rather than trying to cut through the slab in one pass, create a series of cuts that are approximately 1/2 inch heavy. This technique, along with the water seeping onto the granite from the sponge, keeps the blade and the granite trendy and guarantees a quality cut.