Ken Sterling wrote:


Thanks! Good info. Question tho... If I'm picturing this correctly,
you would mill a slot in the bushing the full depth of the cutter bar
(broach) and then start slipping shims under it for each pass? This
is assuming using a rectangular cutter bar instead of the "T" shape.
The "bushing" then could be solid with no hole through the center???
Thanks.
Ken.

You are picturing it correctly. The bushing is indeed solid. The
slot, on mine, goes deeper than the center of the bushing.

If you look at the keyway broach sets sold by MSC and others, you'll
see good illustrations of the bushings and broaches. The only
difference with a single-tooth broach is that, since you can't expect
that one tooth to cut to full depth in one pass, you use shims and take
many passes, adding to the shim thickness with eack pass.

John Martin

Gotcha. Thanks again, John
Ken.