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• Bone Reamer

• Reamers also come in specific tapers and shapes to create holes with non-constant diameters. These are bone reamers designed to cut out a pocket in a leg bone that exactly matches the dimensions of an artificial hip joint implant.

• Assorted Reamers

• A hand reamer is a very handy thing to have when you are drilling holes, particularly in metal.

• A wedge-shaped reamer can be used to enlarge holes in soft materials.

• These step drills work only in thin sheet metal, but they are great in that application because one drill can make a dozen different diameters of hole, up to quite large. The spiral versions look cool, but don’t seem to work as well as the straight ones. They just look better.

• Spiral Cutting Step Drills

• Pipes often need to have both their inner and outer edges cleaned up after they’ve been cut with a hacksaw. This end of the tool reams out the inside edge.

• Bone Reamer

• Reamers

• This interesting reamer is used to bore out PVC pipe that has been glued inside a pipe fitting (such as an elbow or T-fitting), so the fitting can be reused. It cuts the pipe without damaging the fitting.

• Countersinking Bits

• These are so short they don’t even have a shank, just the cone-shaped tip. They are actually counter-sinking bits, not drill bits. (To make the cone-shaped cutout for a flat-head screw so it sits flush with the surface.)

• I’ve got a bunch of reamers. Like drill bits, you need a different one for every diameter hole you want to ream out.

Do you have a better example of this kind of tool? Let me know by leaving a comment, and include a picture of it if you can so everyone can see!