Re: [Anglo_Saxon_Lyres] Slipping zither pin help
- This only works for moderately loose pins but the way to use superglue
to fix a slipping zither (or piano) pin is to unwind and remove the
string, remove the pin and paint the inside of the hole with two or
three coats of superglue. Let each coat dry well. Then wind the pin
back in, attaching the string at the appropriate time.
When the pin is first out check for cracks near the hole - that would
entail a more serious repair job in which case forget about the
superglue and think about bushing the hole instead or finding a
slightly larger pin.
Using any substance which makes the wood itself swell only exacerbates
the problem. This is the classic problem of wood and metal being
forced into close proximity where the wood swells with water or oil or
etc. and it pushes against the metal. That compresses the wood past
its elastic limit and when it dries out again it stays compressed.
Think of metal rings on a wooden flute - the wood always gets smaller
underneath the rings over time. A tuning pin hole can only ever get
biggger for the same reason. Putting EG in the hole would also make it
difficult to glue in a bushing later on for a proper repair.
Quoting AG <atenor@...>:
> This may sound strange but on pianos when a pin is slipping tuners use a
> couple of drops of propylene glycol, antifreeze in other words. It swells
> the wood so that the pin will be held. This is considered a permanent fix
> in that you can't do much else afterward except put in a bigger pin.
> Something else that is probably better to try is to remove the pin and put
> a couple of slivers of hard wood in the hole. I wouldn't put super glue
> into the hole with the pin in place. I don't think that would be a good
> idea and doubt it would be a long term fix.
> On Mon, May 6, 2013 at 5:42 PM, frode_kettilsson
>> Hello to all!
>> A friend has a small harp with a slipping zither pin. I know in some cases
>> a drop or two of CA glue in the hole swells the wood enough to tighten
>> things up, but are there other remedies? Would peg dope have any effect on
>> a metal pin in a wooden body? (I don't have the harp in front of me, so I'm
>> not sure how bad the slipping really is.)
>> Many thanks,