Paulello Wire (was RE: Depowering a Piano)

[Isaac sur Noos]

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Paulello Wire (was RE: Depowering a Piano)Philip, thanks for your interest
in Paulello wire,  I'll get back to you soon with more data on the wire, I
just received some tables from stabilization experiences (comparison with
Roslau), and I am waiting for a more complete document soon, with the
methodology explained, and more physical data.

The different stiffness are produced with a thorough selection of number of
passes to thin the wire, the speed used, the heating, even for modern wire,
the passes are slower than for Roslau, hence the medium is said to tone
better (more "body" and definition).

Experiments are done actually to tin the wire (with electrolysis) before its
annealing , it seem to work well for the thinnest wires anyway, then the
wire should be also corrosion resistant if the process is applied.

I was explained how thick is the original material to begin with , the
"salmon" , should be around 3 inches, so a first workshop produce thick wire
rolls with this basic material, and other peoples are producing the final
wire (in another place) , applying the heat/passes/speed method. They have
been producing also simple breaking strength tests from time to time (others
are done in laboratory environment, but they are very expensive).

Greetings and a very good year.

Isaac OLEG

  -----Message d'origine-----
  De : pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]De la
part de Phillip Ford
  Envoye : dimanche 4 janvier 2004 05:19
  A : Pianotech
  Objet : Paulello Wire (was RE: Depowering a Piano)


    Hello, Malinda,

    I'll mostly just answer on the breaking point....

     Stephen Paulello push us to mix wire of different stiffness in order to
keep the solicitation consistent toward the break he computed that the iH
stay the same as well as the tension so it may be worth a try . As the wire
he produce is covering a wide range it is possible (BTW I've seen the wire
delivered and it is better looking than Roslau actually, cleaner, more
shiny).

    Back to the dinner table now.

    Happy New year everyone.

    Isaac



  I would be interested in hearing more about this Paulello wire?  How is he
achieving different stiffness?


  Phil Ford


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