I operated a 10 inch South Bend Precision Model for a long time.? Threading results were superb.
The thread stop doesn't mean you take a single cut.? You still take multiple cuts.? All it does is define the thread depth, and make it repeatable part to part, if doing straight in tool movement with the cross slide.? Or it gives you a repeatable reference, within the threading of a part, and part to part, for returning the cross slide to the exact same position ready for the next advance of the compound.? On a South Bend anyway, the thread stop means you get a very consistent position of the cross slide.
Also, saying "works great" doesn't mean much without saying material type, size, speed of threading, etc.? I have already mentioned there are cases that are tolerant of straight in threading, and cases where that would not be a good idea.
I might be beating a dead horse, but there are REASONS why using the angled compound for threading are taught in machine shop classes and have been widely used by machinists for longer than I've been alive.
Charles E. "Chuck" Kinzer
On Friday, January 26, 2024 at 01:43:48 PM PST, davesmith1800 <davesmith1@...> wrote:
Charles Kinzer
8:06am? ?
And that means exactly nothing. It is rotatable and just happens to be in that position
When first lath my father had a less experience that most have here. So trial and error learning. We set compound to 29.5¡ã and that how we did threading.?
When I got Mori Seki Lathe in 1976 on the compound was large you want to straight in. Work great.
The South Bend Lathe cross slide stop was for production work. I hate to see the thread quilty.?
