Very useful, gives a nice finish

set your changewheels for 100+ TPI kind of thing, experiment on a bit of scrap

use your tailstock centre for best results

Edited By Ady1 on 14/12/2020 00:31:38

Assuming you still have the same lathe as the one in your album, isn't that the second photo tpi2 ??

Bill

As Peak says if you still have the lathe in the photos set up the gears as per the top chart for feeds, I'd try the 0.089mm/rev first

.

The one in the photo does not have power X-feed so just set it up for what turning feed rate you want and face by hand.

Thats the good thing about the 250-280-290, the front lever gives you 3 rates of shaft rotation which equates to two facing and two turning without having to change the gear train.

Just set it up as per my post earlier using the top chart on the front of the lathe

You have to have a lathe with a feed to the cross slide, not all do.

Should not be a problem for carbide, I usually use 0.0025" for finishing and get a good cut down to 0.001" DOC

If you don't have a cross feed setting you can use an electric screwdriver or drill with a suitable adaptor, eg a tuning fork shape to engage a ball handle, or perhaps a socket to engage the nut on a round handle.
If using HSS using a rounded tip witll grive a better ninish on the final cut, or a small flat on the end of the tool so that you are not making a fine screw thread.