Review on Dazzle with the Sscon Diamond Carving Drilling Jewelry: Unleash Your Inner Artist! by Joey Gilbert

Slower to use AF, but they grind extremely hard metal (hardened steel taps that chip off in soft metals like brass, zinc or aluminum) cleanly and without deviating from the spot, where you place them . Use them in a drill press or milling machine or something like a high speed rotary tool. After half an hour of grinding, the diamonds appear intact and continue to cut (slowly). Still, it's magic wands when the tap breaks in the hole, and the slow cutting speed is compensated for by the lack of wandering in the hole. Cheap for the price.