Bought this bit to replace one from another company. I thought I would save about $20. My old lure is similar to this one, coated, probably indistinguishable. My older part spent several years carving 3D models out of wood on my CNC machine. This blow lasted 10 minutes. When I brought the CNC machine back about 10 minutes after the cut, smoke was coming out of the drill. The wood (cherry) turned black from the heat of the bit. Now I have to order another bit from the company I used before. This