Zinc lap for prepolishing harder stones (spinel, corundum, chrysoberyl, topaz, etc)
Protips:
With pressure and speed heat can build very rapidly. This can melt your dop wax, or release your CA or even epoxy, causing your stone to shift or even fall off the dop. Keep one finger in contact with the stone at all times to monitor for heat build-up – and moderate your speed and pressure.
EIGHT INCH SIZE OLY.
