Keyway Cutter

The problem:- how do you cut a square keyway inside a round hole?

The solution:- Make an attachment to do it….

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Keyway cutter

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On the lathe

The device cuts by pushing a HSS cutter in and out of the hole, shown here mounted on the lathe. The top picture shows the construction, main body is aluminium, bearings are brass and the rest is steel.

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Result

The result – a nice square keyway cut inside a round hole. The lathe spindle is firmly locked cutting a keyway.

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Front

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Back

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