Ries
Diamond
- Joined
- Mar 15, 2004
- Location
- Edison Washington USA
I have cut threads from time to time, certainly no expert. And I have studied a lot of old books on machining. But this is something I am confused about. How the heck do you cut say, a 4 lead 2" diameter acme or square thread?
The latest toy many blacksmiths are into these days is a fly press- a manual press, with a 4 lead thread, and two big round weights on top, for hot and cold forming. There used to be jewelry factories in Rhode Island and Ct. with hundreds of these things in em, but my guess is they are all toyota's now, as there are two different companies importing new ones from India- probably Atlas products.
But being cheap, blacksmiths want to make their own- and want to cut their own 4 lead threads on their 6" atlas lathes.
Seems like even with a CNC lathe, multiple leads are tricky. How did the oldtimers do em on a manual lathe?
The latest toy many blacksmiths are into these days is a fly press- a manual press, with a 4 lead thread, and two big round weights on top, for hot and cold forming. There used to be jewelry factories in Rhode Island and Ct. with hundreds of these things in em, but my guess is they are all toyota's now, as there are two different companies importing new ones from India- probably Atlas products.
But being cheap, blacksmiths want to make their own- and want to cut their own 4 lead threads on their 6" atlas lathes.
Seems like even with a CNC lathe, multiple leads are tricky. How did the oldtimers do em on a manual lathe?