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• Because collet vises, also known as pin vises, only work for a small range of sizes, you need a bunch of them if you want to cover a range.

• Small pin vises can be used for all kinds of things, including gentle drilling.

• Collet vises are used to hold small, delicate things, such as jewelry being worked on. Or they can hold a tool with a round shaft.

• Because the hole in the collet must be exactly the same diameter as the shaft it’s holding, you need to have a complete set of collets spanning the whole range of sizes you want to use. This is the set of collets I use with my small manual (non-computerized) milling machine.

• Three-Jaw Chucks

• Every milling machine needs a nice selection of bits.

• Lathe chucks are wide to hold larger-diameter workpieces. There’s no law that says 3-jaw chucks have to be automatic-centering, but they (almost) all are.

• This small chuck with 4 independently adjustable jaws came with my small metal lathe.

• Drill chucks have relatively long, thin jaws that grip the shaft of a drill bit.

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!