Looking for someone to rebuild my half nuts

[wired]

Im looking for someone to rebuild my half nuts . I have a old Hendey 14x30 and it needs it. Anyone know of a decent half nut guy? I know theres the guy on ebay . Ive asked him a few times but he never gets back to me.

 

[benmychree]

How badly worn are they? Just curious.

 

[Illinoyance]

Back in the 70s I had to rebuild the half nuts on a Lehman lathe. I made a fixture to hold the half nuts in what would be their closed position. I attached the fixture to an angle plate and mounted that to the lathe faceplate. Once I had the half nuts running true on the lathe, I removed the half nuts. I preheated them to get rid of all traces of oil. I did the build up using an oxy/acy torch and cast iron rod. After welding, I had the parts normalized so the iron would be machinable. Next, I re-installed the half nuts on the fixture and proceeded to bore and thread them.

 

[wired]

Pretty bad. It is an 80 YO lathe. Its getting to be very difficult to thread with.

 

[DavidR8]

I was researching how to rebuild half nuts today. McMaster-Carr sells round, Acme threaded nuts.
Many pitches and diameters. Have a look here:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

Also found a video where a fellow makes a halfnut from brass. If your half nuts are to the point of usefulness then buying something from McMaster may do the trick.

 

[wired]

I was researching how to rebuild half nuts today. McMaster-Carr sells round, Acme threaded nuts.
Many pitches and diameters. Have a look here:

McMaster-Carr

McMaster-Carr is the complete source for your plant with over 595,000 products. 98% of products ordered ship from stock and deliver same or next day.

www.mcmaster.com

Also found a video where a fellow makes a halfnut from brass. If your half nuts are to the point of usefulness then buying something from McMaster may do the trick.

Unfortunately The Hendey uses a 1 1/8 -7 acme thread

 

[GT-6 Racer]

This sounds like an interesting project.

 

[682bear]

I have the same issue with my Hendey 12x30... I haven't found anyone yet.

I'm fairly sure that I've read somewhere that Hendeyman rebuilds half nuts, but I haven't contacted him yet to ask...

He is active on the P-M forum, if you want to try and contact him...

The cost may be pretty high, though... I'm considering just attempting it myself.

-Bear

 

[wired]

I would do it myself if I could find someone to do an internal thread on a piece of bronze stock. Ive determined its 1 1/8 - 6 Acme. I have another lathe but it wont do a 6 thread. After that I can split it myself and do the mill work

Help? I can supply the bronze.

 

[Dabbler]

@wired are you sure it is 6TPI? you mentioned 7TPI at some point, and now I'm confused.

I assume you have purchased an ACME thread gauge and checked?

I looked at your past posts and don't know how to gauge your experience level, so please forgive if I'm starting at the bottom basics...

Frankly rather than buy a new lathe for just this operation I'd find a local CNC lathe shop and pay them to make the 6TPI Acme thread and matching nut.

*** Or make change gears to do the work yourself on your own lathe. ***