[pianotech] Renner Flange Bushing Cloth-Not Working For Me!!

[Michael Magness]

On Mon, Apr 25, 2011 at 3:31 PM, Ed Foote <a440a at aol.com> wrote:

>  Mike asks:
>
> >>The rebushing with the Renner cloth has been a disaster, it won't stay
> glued!! I have a tendencey to blame myself first so I have tried, moistening
> then soaking the cloth both only after I prepared the hole in the flange
> using the proper size drill to ream the hole to remove the old glue. In all
> cases it failed, one side stayed in, the start side but the opposite side
> pops out every time. I haven't rushed it, I have allowed a minimum of
> overnight drying time.
>
>      That might be heat set glue, in which case you will have to heat the
> pins as well as the wood.  The last time I had to rebush a bushing, I used a
> toothpick to put a small ring of  hot hide glue,(very thin) around the cloth
> right at the wood, so that when I pulled the cloth in, the glued part went
> in.  Even so, I found that rebushing with modern cloth requires pushing a
> sizing pin in to the very tight hole, and then wetting the cloth with a mix
> of water and alcohol, or VS profelt so that it shrink-fits around this pin
> while becoming denser in the hole.  Letting it dry at least overnight, and
> then fitting a larger pin to friction specs. If you simply ream the
> untreated cloth to fit a pin, it will be wobbly very quickly.
>
>  If it helps you feel better, the Renner parts also exhibit totally
> unacceptable bushings, but usually in the form of  tightening up after a
> year or so of use.
> Regards,
> Ed Foote RPT
>


I have used a sizing pin every time, the directions, from Renner written by
Bill Spurlock, say wet with a sponge to activate the glue, nothing about
heat, to ream only if absolutely necessary.

Mike
-- 

I think we are a product of all our experiences.
Sanford I. Weill<http://www.brainyquote.com/quotes/quotes/s/sanfordiw283095.html>


Michael Magness
Magness Piano Service
608-786-4404
www.IFixPianos.com <http://www.ifixpianos.com/>
email mike at ifixpianos.com
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