Review on 🔩 Jashtool Diamond Drill Bits 4 PCS Set - Ceramic Hole Saw, 6mm-12mm, 1/4"-1/2", with Wax Insert Cooling - for Ceramic Tile, Porcelain, Granite, Marble by Hco Cortes

Four small holes (Ø 6mm and approx. 10mm deep) need to be drilled in a Viscon White granite granite bulkhead which is 7 on the Mohs scale, harder than a normal 6 on the Mohs Scale. .These 6mm Jashtool diamond core bits with cooling wax inserts worked fairly well out of the water with an inexpensive rotary bit set at low to medium speed and moderate pressure, with a very slight twisting motion of the wrists to move the bit slightly around the granite. dedusting In total, drilling took about 60 minutes. I leaned forward over the counter and cocked my head to the side because the low cabinet was in the way and my neck was clenching from the awkward position. So I had to take more than a few breaks that spread the task over several hours. But you can't blame the Beats for that. I'm only deducting a star because at the time of purchase the seller's description page said water wasn't necessary because of the wax inlay, but further down the page they recommended wetting the bit with water. It may just be an accidental mix-up, but sellers need to be aware of such things. I have found that the bits work better without water.