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Originally Posted by sanddrag
Is it possible to do non-standard broaching for example a 1/8" keyway in a 3/8" shaft? If so, could someone tell me which mcmaster p/n broach and bushing would go together for this. Thanks. I'm guessing I would need 3153A16 and 3151A109 but I could be wrong.
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I guess the first question I would ask is... why do you want to do this?
If you have a non-standard keyway in a shaft and you want to use a standard piece of keystock, so you're thinking of using a non-standard key in the shaft, may I suggest looking into stepped keys? Essentially on different sides of the stock they are different widths.
This may make your job a bit easier and a lot cheaper, if this is indeed why you want a bigger keyway.
Matt