Threading on a manual lathe BEST TECHNIQUE EVER !!!!

Nice threading lathe trick joe,thanks.

Yes Joe i agree with you totally but what about someone who has a screw on chuck out there that is just getting started you forgot to mention that you just showed him how to take his chuck off in a hurry i know you are a good machinist with alot of experience and i like to watch your videos but sometimes you have to remember that very few have your experience had to mention it might help someone thanks for sharing

A=air, B=bore...thanks, I do tend to mix them up.

I liked the video, but the camera was jumping around so much, I had to turn it off.

Excellent video, it made me hit the subscribe button, please keep giving this type of content to help all of us become better machinists...👍👍👍

Fantastic channel Joe, thanks so much for sharing your knowledge in your videos.
I’ve just started trying this technique out after having to weld up a tool holder as I couldn’t get my tool height low enough and find it so much easier, it’s allowed me to up my speeds and improve the surface finish on my threads massively.
What’s the best way to use this technique when cutting imperial threads on a metric lathe or vice versa?
Thanks again

How do you go on when the thread can't have a undercut ?

I was a machinist 42 years. Always the top hand at my job. Five minutes into this video I learn something from this guy.

This makes such a difference and is genuinely one of the best tips out there for lathe work. Thanks Joe.

If you stick the wires into polyethylene foam 2 wires together and the third wire almost a diameter away that will hold the wires and make it harder to drop any in the chips.

If u wer a teacher , we'd have more and better tech guys . Bless U

You need a LH threading insert holder. When its inverted, the insert will be towards the spindle.

Also: verify that the leadscrew has RH threads.
My Cincinnati Tray Top has a LH leadscres, so I get RH threads when the leadscrew/spindle spin opposite.
Same direction Leadscrew and Spindle = LH threads.

I can't remember the last time I needed to turn a LH thread, I'd definitely run a scratch pass to verify direction and thread pitch before committing to a full cut.

So I tried this method. Of course it's not a matter of "did it work or not" - of course it 'worked'.

I'm a self-taught hack when it comes to machining. I bought a Grizzly 4005 "Gunsmith" lathe, and their G3617 mill and "taught myself" to use them. Therefore, I learned to cut threads the "regular" way. Never had a problem running into the head, but I will admit a certain anxiety about it. I actually conceived of cutting threads the way you teach here, but I missed some critical details. I ended up with a very nicely done resizing die with LEFT-HANDED threads. :) Anyway, as I said, I tried this method, this time doing it correctly, and ran into a problem. I almost always use "full form threading insert" to cut threads. I'm not a machine shop and am not going to invest in the tooling or materials to MAKE thread cutters. Here's the problem: The relief cut, to the left of the threads, has to be LARGE in order to accommodate the insert. MUCH larger than I cut when I am cutting threads "the old-fashioned way".

I have learned a great deal from you, and I sincerely appreciate the time you spend providing thorough instructions.

How do you feel about the guys that never disengage the half half but. They stop the machine in the relief and reverse the machine. I tried the method on a 3/8 x 16 for practice and it was easy. My next practice I'm trying what you just demonstrated. Looks even easier.

Nice work I shall learn from this

Thumbs down for you. Every Mine and Government job on the planet requires you to wear long sleeves.
Arrogant big mouth.

Thanks Joe. I’m very new to machine work and was why you couldn’t do this to avoid the pucker factor. I’ve just ordered a used topnotch and I’m going to dedicate a tool holder to mount it up-side-down

Joe, thank you so much for this. I used this today and it rocks. I am never threading towards the chuck again

The compound should be angled in the opposite direction for this method.

Great video, from ex turner.

Thanks for sharing....informative!

Hi Joe. It wasn't really clear from the video, but do you still use the 29&1/2 degree compound method with this technique? I tried using your technique for making internal threads to a stop (as per your other video) and I felt like due to the direction of the cut the whole compound was being pulled out due to the backlash in the compound lead screw. I tried to fix this by swinging the compound to the opposite side, but this causes clearance issues.
Any feedback would be greatly welcomed.
Regards,
K.

Any recommendation on how to modify/secure a threaded on chuck to use this method?

I was talking with my dad and said that that technique could potentially pull the part out of the chuck have you ever had any issues

Excellent technique. I didn't have a LH threading tool holder and the RH couldn't get close enough to the shoulder, so I used an internal threading bar turned upside down to make my external threads. Worked great and I'll be using this in the future when threading to a shoulder.

im hoping you can answer the why to this question. i cut OD threads, tool to the back side, cut away from the chuck. i was having issues with chipping the carbide using the crossslide. so i used the compound instead @ 29*. the threads had a "rolled back" look, the left side rear face was closer to 90* while the front side had a normal looking thread angle. Like only one side of the thread was cut. is that from feeding the tool back towards me somehow instead of pushing into the part?
I noticed later on after trying again that the compound lever was moving from Tool pressure at times. I guess that could have had something to do with it

Hi. Can this method be used on Metric Threads. The half nut is always engaged so when you travel back to the carriage stop under power won't the carriage crash the stop. Cheers Paul

My teachers gonna be very confused next week

Nice, thanks for the tip.

Hi Joe- I hear tell that the carrage on some lathes is not gibbed down tight on the ways — only it’s own weight keeps the carrage down on the ways , so we better watch out on big,coarse threads!

Nice technique with the lathe. Shit technique with the camera… I think I’m sea sick 🤢

When i was an apprentice i once ran the tool into the shoulder of a job by not disengaging the half nut. Mind you the wages girl was stood right behind me and i was severely distracted at that moment 😂 Going to use your idea in class next week awsome timing.

What can be dun on a thread on chuck to thread in revers to keep the chuck from unthreading ?? SB 9a lathe

Back in the day before CNCs, we had a lathe set up with a tracing attachment. If we needed to cut threads, we just let the attachment pull the tool out of the cut in the exact same place every time.

At age 60 I never before heard about pitch wires, so thanks a stack for that tip. Threading "upside down" is standard procedure for me since about 40 years ago. However, nobody teaches you to do so. Probably saved me from serious trouble many times over. If you would normally set your slide to 28° (for a 60° thread, better adjust this to 32° for the reverse cutting, or if possible turn the top slide all the way around - to 28° the other way. As a German, I have tremendous respect for engineers who work with inches, pounds, letter drills, fractional taps, wire gauge, ounces and psi. The wiring in your brains must be different. 👍

Hey Joe, i am using the same technique but why i have chatter? I using internal thread 16irag60 insert

Pretty sure this works on the ID too, with a LH tool for RH.

Thanks this make my life easy

Good luck looking for the wires once they fall in the chip tray

Man I couldnt imagine getting sucked into that thing....

That’s a great idea Joe, I’m going to try and make a boring bar for my shaper and will need to thread it and make a nut so I’m going to try your trick . Thanks a lot
Tim from New Zealand 🇳🇿

Nice video i have never thought of trying this way, must give it a go!

you can set the compound parrallel with the piece. then feed in but also 1/2 as much in the compound. that is instead of doing it at 29 degrees.

Hi Joe, another fantastic video! You state when using carbide there is no need for the 30deg (or 29.5deg) on the compound. If you were using HSS and the lathe is going in reverse, should the compound be 30deg to the left rather than being 30deg to the right? When thread cutting with the lathe going forward and you are travelling right to left, when the compound is fed in it is mainly cutting on the left hand side of the thread, so I assume when the lathe is in reverse and cutting from left to right the cutting is on the right. Hope my question makes sense.

I will have to wait until I upgrade to a second lathe, since my current one has a threaded chuck. It's extremely precise, but it will come undone in reverse...so yeah. Too bad :( neat trick though, I think this is great for anybody. Beginners or people with ADD. I am both haha

We all know that anxiety well. Especially if you have an anxiety disorder, that makes you feel like you are having a heart attack. As a matter of fact, I discovered my first anxiety attack, when climb cutting square holes, for a progressive die, for plastic. And it jumped a little.

Instead of three wires, we had triangles, connected by a flexible sleeve. Was a little easier to, not drop, into the chips.

Like many others that have commented I have been doing it wrong for many years. I watched this video last week, and since I knew I was going to thread up to a flange for a job this Week, I tried it and it worked absolutely perfect! I may never thread toward the chuck again. I have enjoyed many of your other videos too! Thanks again.