On 23 Mar 2004 10:39:19 -0800, jim rozen
wrote:


For most materials, forming the chamfer after the threading
is complete will mung up the lead-in and it will be very tough
getting the female threaded part to start cleanly.

Jim

I chamfer threads on the bench grinder - hold the part straight in to
the wheel only elevated enough for the desired chamfer, so that the
wheel is grinding outwards from the end of the threads, and the
grinding marks are parallel to the bolt. Always works, although I'm
sure there must be one of those literate right-wingers who could
explain it better. :-)

Wayne