A hole saw has an arbor and a cup shaped cutting member. The cup shaped cutting member has an annular skirt with a plurality of teeth at its free end. A drill bit is secured on the arbor. The drill bit includes a pilot point with a first cutting edge. A second edge is formed on the body portion of the drill bit to form a constant diameter hole in the workpiece.

 
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< Eyeglass lens processing apparatus

> Drill, such as a twist drill

> Hole saw having efficient slug removal

~ 00531