Originally Posted by
cb1
yes.
you have it right. on a Walter machine the thread is ground 1 at a time.
best wheel i found for thread mill is a diamond plated wheel.
made to size and shape and plated with diamond. you will need to experiment with feeds and speeds for best surface finish and best wheel life and best stock removal.
with a good wheel you can do with 1 pass, no need for roughing and finishing.
you should be able to ask any diamond company and they will have plated wheels.
good luck!!
Walter is a great machine, but not the best at making thread mills.