Re: [CAD_CAM_EDM_DRO] Threadmill

Hi John,

Thanks for posting the threadmill pix. So the threadmill spins in the
collet, and the part makes 1 rev, and moves up one pitch? Looks like
the "thread" part is in holder at a slight angle? Is this something I
can grind out of a tap and try myself, or do they make a threadmill
small enough for a Sherline?

Alan KM6VV

John Stevenson wrote:

>
> OK Guys,
> I have uploaded a file to the files section called Threadmill.jpg
> This shows One holder in a collet chuck and a second tool on the
> right.
> The brass test piece is in the middle and is about 2" diameter. This
> thread of 8TPI was cut in one pass and one revolution. As an idea of
> scale the holder on the left has a 3/4" shank.
> I also use this tool to screwcut internal threads on the lathe.
> John Stevenson