A Thread Cutting Video!

How to cut threads on your metal lathe including how to measure the finished threads with Pee Dee wires (PD)

[haroldpearson]

So pleased to see you are using the method of setting over the top slide to half the thread angle and bringing the tool out with the cross slide.
I was taught this method as an apprentice tool maker in the 1950s.
It's also featured on the Colchester lathe training videos.

[priority]

Finally, a thread cutting tutorial that I can understand. I now feel confident that I can try this. Thank you! You’re a great teacher👍😊

[jaredbarsuglia]

Wow, the explanation of why the compound angle is what it is, flat out perfect. I never truly understood why until now. Thank you

[gonkmeat]

Perfect timing and excellent explanation. Very informative. I've watched at least 4 other threads cutting videos from some YouTube maestros but I must say your explanation was leaps and bounds bette3r. Thanks again as I just figured out the gear change required for threading and had run a quick trial last week. I can't wait to sink my teeth, or should I say my threading tooth, into this operation now.

[mikebarton]

The clearest video I have ever watched on single point screw cutting and measurement using thread wires. Thank you. Mike UK

[samcoote]

Thanks for the explanation on why 29.5 degrees is used, it's the clearest definition of it I've seen, long time watcher and subscriber, first time commenting, thanks for all the great videos :)

[LetsRogerThat]

This is By Far, the most informative threading video I’ve ever seen. I finally understand the various things I need to do. Thank you

[machinists-shortcuts]

Hi Winky, you can simply keep the compound set at zero, parallel to the bed and advance the compound half the depth of cut for each pass. By moving the compound and also the cross slide this closely simulates the 30 degree angle. This method also helps with the depth of the thread as the depth is directly on the cross slide dial ( dro ). The tool load is split 87/13 so the trailing edge skims the right hand flank and the leading edge does the majority of the cutting.

[AJR]

hi Mark - That was a very good video, Thank You. You showed just enough restraint to keep it simple for beginners and not get bogged down with anything too technical. There is so much to learn about threads and cutting them that it'd take many videos just to cover a fraction of the information.

[AmateurRedneckWorkshop]

You got her done just right Winky. The most enjoyable thing you can do on a lathe is single point threading.

[gerhardp]

I was struggling with threading, watched this and have a better understanding. Off to the lathe!

[jimpritz]

Thanks for that video explanation. Seems like a lot if you have never done threading but you covered everything in a very easy to understand way.

[rickpalechuk]

Good explanation of the concept Wink, thanks for sharing,
Cheers

[Spetet]

Lots of good detail. Loved the tap bit trick. Thanks.

[watcherwatchmen]

I knew that was a logan lathe. I have a model 922 which is very similar. That company is still in business and still supplies parts for them too!

[kerrywil]

Great video. Thanks for letting me know about letting the pee dee wire go. I was taught to use a bit of cork and insert the wires to hold them

[t.d.mich.]

The divisions on the Center Gage are for measuring or comparing threads per inch. You take a light cut just scratching the surface, and then put the scale of the Gage up to the workpiece to see if you are cutting the proper thread pitch. A 6" scale can measure pitch on most threads, but the Center Gage is for comparing odd threads that the scale is not practical for. ie: 24 tpi The name PE DE wires comes from the fact that you are measuring pitch diameter, otherwise known as P.D. Good video!

[rayfalcone]

a very intuitive video, very well explained.thanks for sharing my friend.keep up the good

[smartguy]

I guess I had this backward. My thought was always to set the compound at 30.5 Degrees so as to leave a small jagged edge on the right side. The purpose being that you are only cutting on one side (the left side). This helps reduce chatter because you are NOT cutting on 2 surfaces at the same time. Then when taking the final pass, you would only advance the "cross slide" enough to clean up the right side.

[chrisjessee]

Very educational and informative. I didn't realize there was that much involved in cutting threads. Of course I'm not a machinist, but I do find it very interesting 👍🏻👍🏻