MadModder

The Shop => Metal Stuff => Topic started by: John Hill on February 01, 2017, 04:19:56 AM

Title: Sneaky trick to remove thread..
Post by: John Hill on February 01, 2017, 04:19:56 AM
I needed to take the thread off the ends of some threaded rods that were too long for my lathe.  I wanted to put 'ends' on the rods so that I could mount in bearings for my router table project..

(https://c1.staticflickr.com/1/681/32643659325_920c10db79_z.jpg)

This was a test piece whereas the rods I am using are 2 metres long and I need to do each end.  This rattled a bit due to the loose fit of the hardware store nuts but I will be getting nylock nuts while I do the work pieces which I hope will dampen the rattle and get a little better finish.

Not perfect but maybe close enough!

John
Title: Re: Sneaky trick to remove thread..
Post by: PekkaNF on February 01, 2017, 05:25:52 AM
Did you let the allthread to do "autofeed" :lol:

Pekka
Title: Re: Sneaky trick to remove thread..
Post by: sparky961 on February 01, 2017, 06:22:42 AM
Modify the nuts by cutting through in one place, and a shallow cut opposite that. You'll get a wonderful grip without damaging the threads.  You can tap a longer piece and do the same thing for lathe work, but concentricity may not be perfect.
Title: Re: Sneaky trick to remove thread..
Post by: DMIOM on February 01, 2017, 08:23:08 AM
John - I did something similar years ago to get beneath/remove the hardened threads on the end of a ballscrew. Not wanting to get grinding debris on the mill or lathe, I anchored an XY compound vice alongside a bench grinder and clamped the nut in the vice. Infeed towards the wheel was via the compound table, traverse and covering the circumference was via a cordless drill on the other end of the ballscrew.

Dave
Title: Re: Sneaky trick to remove thread..
Post by: John Hill on February 01, 2017, 01:30:57 PM
Yes, I turned the rod through the nuts to feed the cut.
Title: Re: Sneaky trick to remove thread..
Post by: sparky961 on February 01, 2017, 05:57:17 PM
Oh, now I get it. I thought you were just holding it fixed. I suppose my suggestion may still work, but your idea of Nylock nuts sounds very promising.