Internal Imperial Threading on an Import Lathe
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- Опубликовано: 20 янв 2023
- In this video I'll demonstrate how to set up and cut internal threads on an import lathe.
Link To Part 1 - Change Gears • PM-1127 (and other imp...
Link to Part 2 - External Threading • External Imperial Thre... 
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Outstanding series on threading, the best I have been able to find. Kept up the good work.
Hi Lee. Nice series. Very thorough explaination.
Excellent job Lee, I love the challenge of making a thread and matching a nut to it, Cheers!
Threading is a pretty complicated subject. From I have seen in videos the are many variations on how to cut threads. The method I find most interesting is thread milling. If you ever have the time and inclination, how about a video on thread milling. Keep them videos coming Lee. KOKO!
exellent video LEE really looking forward to seeing the next one on threading an non nominal size. ive done this before a few times but am looking forward to see you do this and more than likly pick up a few good tips. thanks.
Very nice Lee. I have cut internal threads by turning my compound do the crank is on the far side or away from the operator. It gave me the clearance I needed to feel more confident and have a successful job.
Thanks for the video keep on keeping on.
Great video, good explanations.
The correct bore size for an internal thread equals the nominal bolt (or screw) size minus the thread depth shown on a thread depth chart. Example: The bore size for an internal 3/4"-10 TPI is .750"-.0640" = .686". The bore size varies with the number of threads per inch with courser threads always being deeper than finer threads.
If you turn steel at any speed with my lathe at least you get your forearms and hands showered in hot swarf causing you to let go of the controls etc. So although I have heard the no gloves and no long sleeves I prefer to cater to the safety items more germane to my needs. I am very careful (I know everyone says that) but I don't like being burned cause it hurts and destroys concentration. Sometimes safety has to be done with a healthy dose of common sense. I have tailored my routine at the lathe to my needs for instance I never, ever use my hand as a brake on a turning piece. I see a lot of people doing that as they shut down and maybe it fits their needs but I wear tight sleeves and keep my hands away from moving parts. But I do get the thought!
Just have the compound 180 deg from your current set up and then feed in with the compound and there's no conflict with the carriage/compound and the chuck.
True but a little difficult to see the compound dial clearly at the rear of the cross slide using that setup.
What’s the solution though if you really have to thread the 11 threads?
hello LEE i dont know whats going on but 4 the last good while your videos dont seem to be as sharp in video quality as they used to be. did you change anything to do with video? it looks like the picture is kinda foggy.
I hate to say it, but the concentricity on that hollow bar is terrible. I don’t understand that, because it’s well over even what an old chuck would have. Maybe some chips on one or two of the jaws? You could also hear in the first few cuts where it wasn’t touching part of the bore.