An investment in tools is required for most every craft except perhaps daydreaming. Is thinking not a type of formless tool? Let me ponder that… Just a prelude to this pricey little tool used for machine controlled (CNC) wax carving. It is an 1/8 inch shaft diameter, tapered (10 degree [total]) 0.004 inch ball end carbide milling bit. That's a mouthful. These type of bits are the smallest tip for the finest detail machine carving. Also used are 0.005", 0.010", 0.015"and 0.020" in this style. Several other bits of various designs (twisted pyramid) are commonly used. The pyramids have flat tips and are made in similar tapered tip diameters as the ball ends bits. They all are super fine needle ...