Drilling is a cutting process that uses a drill bit to cut or enlarge a hole of circular cross-section in solid materials. The drill bit is a rotary cutting tool ...
"He set $7500 as the right amount for the car. The teacher sets a high value on neatness. "
Abrasives: Substances rubbed on wood to smooth the surface. Flint, garnet, aluminum oxide, and silicon carbide are common abrasives. ABS pipe