Hole cutter

A hole cutter for cutting a hole through a workpiece, comprising:

• a drill bit portion extending in a longitudinal direction;
• a tubular member rotatable in a rotational direction, said member having a longitudinally extending annular side wall concentric with said drill bit portion, said side wall terminating at a first longitudinal end at a generally planar, smooth radially extending face surface;
• no more than one gullet extending through said face surface and extending longitudinally in said side wall, said gullet being bounded by a cutting edge on a side facing said rotational direction.

A hole cutter for cutting through a workpiece, comprising:

• drill bit means including a free end for drilling a relatively small centering hole, wherein said drill bit means extends along a longitudinal axis;
• a member means in operative connection with said drill bit means and wherein said member means extends in surrounding coaxial relation with said drill bit means, and wherein said member means has in supported connection therewith no more than one cutting edge, said cutting edge being disposed radially outward from said drill bit means and in a first longitudinal direction from said free end, and wherein said member means includes in supported relation therewith a generally smooth, radially extending generally annular surface, wherein said annular surface is disposed from said free end in said first longitudinal direction slightly further than said cutting edge, whereby upon rotational engagement of said apparatus with a workpiece said annular surface smoothly rides in a swath cut by said cutting edge cutting through the workpiece to form a hole therethrough.