restringing

[Paul]

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Mark
I found your method of quick removal works best for me, also. I use =
Milwaukee's heavy duty angle drill and extract the pins as fast as it =
will run- I think its around 500 rpm. The pins come out straight and =
clean, no flag poling and little damage if any to the pin block. I =
inspect the block through the holes and use a brush and compressed air =
to clean them. I've used the varnish technique when driving new pins on =
the last two pianos and I'm impressed with the improved feel.
  ----- Original Message -----=20
  From: Mark Story=20
  To: pianotech@ptg.org=20
  Sent: Friday, April 28, 2000 4:28 PM
  Subject: Re: restringing


  Elian,

  I seem to have missed this topic the first time around, but I once =
tried various methods of extracting the old pins as well. I found that =
turning the pins out by hand can actually heat the pinblock wood more. I =
determined that the quickest I can get the pin out of the hole, the less =
heating overall occurs. I think you would have to turn the pin very slow =
(like maybe less than 1/4 revolution per second) to avoid heating the =
pin. Consequently, I use a 1/2" or 13mm drill motor with a star socket =
at 500 rpms or more, which will normally extract the pin in around two =
seconds. Surprisingly, the pins while warm, come out cool enough to =
handle.
    ----- Original Message -----=20
    From: Elian Degen J.=20
    To: pianotech@ptg.org=20
    Sent: Friday, April 28, 2000 11:59 AM
    Subject: restringing


    I followed the list and the idea of using an electric drill also is =
good as
    long as the drill turns at a very low speed, low enough not to heat =
the wood
    by friction, also the best is one of those drills on a stand so you =
can
    place it in a way not to press to any side. Personally I prefer the =
T shaped
    lever I can turn it real slow.



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