How to Rebuild Half Nuts for Logan 10" Lathe part 1

[@robot_spider]

I love how, in machining, very few things are ever really thrown away. There's almost always a way to rebuilt, refit, repack, resleeve a part to make it useful again. You didn't just buy another set of half-nuts, you made the old ones new again. Really cool stuff.

[@JBH123]

This was very informative! At least for this newbie. Very clear filming and just the right amount of explanation. You gave me a much better understanding of how the half nuts work and how they can be rebuilt. Thanks!

[@darrelwallen1455]

I made a sleeve same as you have, but evidently some Logan lathes are different, and the sleeve was not able to fit in mine, because it interfered with something else on the apron. I cut the sleeve the same width as the half nut and put in a couple of set screws on the split line to keep them in, in case the epoxy let go.

[@tattoos1988]

I’m a new subscriber now this video shows your talent and attention to detail I really enjoyed it I’ll be working my way through others lol all the best god bless

[@JShel14]

I have a south bend lathe built in 1920. The half nut is run down but the lead screw is great. I would totally pay you to restore mine. It's from a South Bend with a model O apron, which is extraordinarily hard to find.

[@BuildFixCreate]

Sorry I don't feel comfortable doing this without having the whole machine with me to test fit parts on. I would recommend ordering an acme threaded nut from mcmaster and using that to rebuild it similar to what I did.

[@JShel14]

oh sorry...I wasn't actually asking. I was just expressing that to show how impressed I was with what you did. I do plan on attempting what you've done once I have the rest of the machine restored.

[@vieiram7235]

Hi, very good job. Please, what is the color specification of your lathe? It's a very beautiful color.

[@cartertrefz4585]

How did you use single point thread cutting if your half nuts were slopped out? The whole reason I am rebuilding my half nuts is because I cannot cut an accurate thread. This is why I am using a tap

[@richardgalli7262]

While sizing the initial blank cutting some fine shallow threads would have worked well to "roughen" for epoxy. I think a lip on both ends would make the brass body more secure and add another acme thread.

[@mikenetherlin1209]

Great job, you do quality work, your lathe is very nice. Keep making videos. Just got a Logan 14 lots of work fixing all the warn out and neglected parts, just rebuilt the head stock, 5 days works muck better now ( smile)

[@BuildFixCreate]

Nice work Mike! Its a great feeling when you finally get it back together and its working better than when you got it! My lathe took me months but i couldn't be happier with the results

[@jamiebuckley1769]

great video. what was your formula to figure out how deep to cut the internal acme threads for your half nuts? i subbed to your channel glad i did your one talented individual. keep up the great videos. thanks.

[@BuildFixCreate]

Standard acme thread depth is 0.5*pitch. So if it is 8TPI = 0.5*0.125 = 0.0625" But you need to know what the minor diameter is that you bored it out to as that will affect it a little. Thanks for watching and subscribing!

[@donaldnaymon3270]

Great job. Thank you for sharing.

[@MaturePatriot]

Put some rubber bands on the boring tool and it will help keep the squeal down. - Don't you get a great feeling using a lathe you rebuilt to build new parts to use on that lathe? - Great work! - Had to subscribe.

[@BuildFixCreate]

I'll try the rubber bands. Thanks for watching and subscribing!

[@geneparson8175]

Thanks for sharing your technique for rebuilding half nuts. The half nuts on my Logan were completely trashed and were unusable. After watching your videos I successfully rebuilt my half nuts and they work great! Do you mind saying what size quick change tool post you are using? It looks like it is a good size for the 10 inch Logans. Thanks and keep the videos coming!

[@BuildFixCreate]

I'm glad the videos helped you out with your lathe! My tool post is an AXA size. It's perfect for a 10" lathe. I wouldn't want to use anything larger.

[@yesdeere1376]

Does the brass hold up ok?

[@BuildFixCreate]

I'm using the first set that I rebuilt over a year ago and they are still working great.

[@yesdeere1376]

Build Fix Create awesome. Brass is easy to work with. I'm building a lathe so I can't cut threads yet. I welded 3 acme nuts together and it worked really good believe it or not.

[@jhareng]

Depends how much you use it, of course it will last if you dont. Manganese bronze much better for that purpose