Gunner, how rough on the machine is rotary broaching on an Omniturn GT-75, using 5C collets, broaching an internal 6 point spline of around .312 overall diameter through brass previously drilled with a pilot hole of the proper minor diameter? How about a larger spline, around .437, through 12L14 Ledloy? The broaching would reach about 3/8" into the hole each part. I would appreciate any comments you have on this.
RJ