Review on 🔩 Effortless Drilling with Shuangjia Diamond Glass Drill Ceramic by Adam Ross

I drilled a few holes in 3/8 inch porcelain stoneware using a 1/4 inch drill bit. It worked great. These blades claim to be dry useable but I think they perform more efficiently and last much longer when used wet. I simply used an empty water bottle, poked a small hole in the cap after refilling it, wrapped a towel around the work area to soak up all the water, and drilled at low speed while the helper sprayed the water. The system works great. Protecting drill bits from overheating while drilling prolongs their lifespan.