Pete C. wrote:


Physically they are a comparable size and material quantity as a similar
tap or similarly sized end mill, only the geometry of them is really
different. Since all these tools are presumably produced on the same
multi axis CNC grinders, why the cost difference? Is it just because
they are newer technology?
Yeah, I wondered about that, too. I ended up buying a single-row
thread mill, it can be used for a wide range of thread pitches, but
is slower, as you have to go around the part the number of threads
on it to complete it. I only used it a few times to do oddball threads.
A tap is way faster.

Jon