On 16/08/2013 14:55, asalcedo wrote:

I have a Waterfront brass paper holder C240 in antique gold, cost new
£160

'Paper Holder - C240 | Waterfront Designer Bathrooms'
(http://www.waterfrontbathrooms.com/b...er-holder-c240)

with a worn out thread in the screwed union inside the ball between the
bar parallel to the wall and the bar perpendicular to the wall.

I don't know the exact thread but I'll try to find out.

Since I am not familiar with tap and die sets, but I am willing to
learn, what is the way to use a tap and die set to repair these
threads?


If I use the same diameter as the original one, will I gain anything by
rethreading?

Not really - that will clean up threads with minor damage or those that
are partly blocked with debris.

If I use a smaller diameter in the male thread, then the female thread
will be too big.

I have seen in You Tube that bolts with worn out thread are rethreaded
successfully by using the same thread die.

Normally if you have a machine screw fitting into a tapped hole, and the
hole has enlarged and the thread been damaged, you would redrill the
hole larger, and re-tap it one size up. Then use a large diameter bolt.

Or do I have to use a thread repair kit like
http://www.youtube.com/watch?v=sQHRB2ElZJ0

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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