cutting gears

[Rickabilly]

(07-15-2012, 02:01 PM)dallen Wrote: I plan on making the bores undersized then rebore them after the teeth are cut.

Just my £0.02 don't do it, there's no way to set up to the pitch circle which is the only thing that really matters on a gear, as long as the pitch circle is the right size and coaxial to the bore the OD can be miles out and 0.010" off centre and it'll still work fine on most applications.

My method is to set your arbor up as true as you can, and bore your gear to finished size, use the arbor as a reference when setting the cutter up on centre either with a square and guage block or by any other means and cut those teeth, in one go using a gear tooth vernier to verify tooth size.

Best regards
Rick