Diamond Grinder Part 3: Making a Keyway Broach

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Today we’re getting back to the diamond grinder. Sort of. We’re making a tool that we’ll need when we get back to the diamond grinder: a single-point broach for CNC shaping the keyway in the hub.

This is the same technique I use to make simple HSS boring bars for the lathe, and it works well.

Tools and parts used in this video:

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