- Joined
- Jun 8, 2016
- Messages
- 603
I need help threading on the lathe. Just for info, I have a Logan 12" lathe, it is a turret lathe but it has a threading dial. It has a dual tool post cross slide, and the previous owner had added what appears to be a compound from a 10" Logan. So I have an AXA QCTP on the compound. The issue to keep in mind is I have no accurate way to set the compound angle. So, I'm threading with the cross slide.
But that isn't the issue, that was just background.
The question is this.... I need to thread 2 mating parts 1"-20 UNEF, one set of interior and one set of exterior threads. This is a 2 part muzzle device with a taper for mounting. The drawing I have calls out different diameters for the threads than what is in my Machinery Handbook. I think the drawing was 'simplified' by the person I got it from,and I'm not sure what dimensions to use.
So after rambling, what are my major and minor diameters for both the interior and exterior threads?
But that isn't the issue, that was just background.
The question is this.... I need to thread 2 mating parts 1"-20 UNEF, one set of interior and one set of exterior threads. This is a 2 part muzzle device with a taper for mounting. The drawing I have calls out different diameters for the threads than what is in my Machinery Handbook. I think the drawing was 'simplified' by the person I got it from,and I'm not sure what dimensions to use.
So after rambling, what are my major and minor diameters for both the interior and exterior threads?