Efficient repining method by Renner

[Isaac OLEG]

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Well I try not to go farther than 1400 it is yet a large size.

Ideally we should add one size only.

That's funny because when I begin to learn the trade, all the pinning work
in the shop was done with these long centers, and of course they burnish the
flange in one direction only (but thy work the Birdseye too a little more
than pre cut centers.

After that I begin to use precut, and the direction of the fiber I did not
think about. Even the burnished I use in both directions, and more than
wanted, I have to go on size more than what I want.

So I'll give a try next time, but yet I suspect this fiber direction idea
will change many things.

 I don't see how the center may not hold well in the Birdseye, unless the
part quality is really poor, or the part have been brutalized in some sort.
Even Renner say that some factory and some techs ask for no graphite in
their parts.
seem to me that it can give a better consistency in time, but yes I've seen
many times sluggish parts while new, or recent, I'd consider it more a wood
moisture problem but every idea is welcome.

Beside, Renner is the only place where I can find really good graphite
sticks (round ones, really slick . Not that I make a large use of them ...

Talking about moisture, they say 45%-70% is acceptable, and that in a very
dry shop, the action will stabilize dry after a week (seem a long delay to
me)

Nowadays we can't say they are not experienced in piano actions !

Best Regards.

Isaac OLEG



Isaac OLEG

Entretien et reparation de pianos.

PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77

  -----Message d'origine-----
  De : caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]De la part de
Richard Brekne
  Envoye : vendredi 23 mai 2003 12:14
  A : College and University Technicians
  Objet : Re: Efficient repining method by Renner



  David's Email wrote:

    Rebushing rather than repinning at what size?  21.5?  Interesting that
in
    Renner's technical info they didn't mention the most important aspect,
i.e.
    the pin must be tight in the birdseye.
    David I.




  Well...what sounds good in a document, and what actually is done, and what
actually results are ofte times different things entirely.

  Personally, I have yet to find a set of stock shanks that I havent been
able to improve substantially by repinning. And secondly, when I order
shanks from Renner I specify that no graphite is to be used in the bushing
felt. Sometimes I have to order from an alternate manufacturer because of
this. I like most everything Renner makes, but I wish somebody would let
them know that graphite in bushings is not such a good idea.... especially
when there is a great alternative.

  RicB
  --
  Richard Brekne
  RPT, N.P.T.F.
  UiB, Bergen, Norway
  mailto:rbrekne@broadpark.no
  http://home.broadpark.no/~rbrekne/ricmain.html
  http://www.hf.uib.no/grieg/personer/cv_RB.html


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