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asalcedo asalcedo is offline
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Quote:
Originally Posted by John Rumm View Post
On 16/08/2013 14:55, asalcedo wrote:[color=blue][i]


That works where the male thread is undamaged...

If you have a pair of threads where both sides are worn, then it becomes
harder to fix properly. An epoxy fix would be simpler (perhaps a metal
loaded one like JB Weld)

If you really want to go to town, then drill out the female thread, and
then turn down an insert so its a press fit into the hole. Fit that then
redrill and retap to the original spec. For the male bit either turn it
down, sleeve and re-thread it, or braise / silver solder onto it, turn
it to the major diameter, and then rethread it.

(this all assumes you have a lathe to hand!)




--
Cheers,

John.

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Hi John, your knowledge is vast!

I have one more idea:

What about filing down the existing male thread to the maximum possible smooth diameter, let say it is M7 (I think it is going to be around M7) and then rethreading the male end to M7 using an M7 die from my tap and die set

Laser 4554 Metric Tap & Die Set 110pc: Amazon.co.uk: Car & Motorbike

Then drill a hole into the second ball of the paper holder and tap an M7 thread into it?

Since the original ball will have the hole facing the wall it will not be noticed at all.

Question

Will I need to file down the worn out male thread to a very precise, smooth and centered cylindrical shape?

I would think that using a hand file should be good enough.

Last edited by asalcedo : August 16th 13 at 09:05 PM