[PHISHING]: Re: Setting Dip on the Bench

[Annie Grieshop]

Brilliant!  Thanks.

Annie
  -----Original Message-----
  From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org]On
Behalf Of Erwinspiano at aol.com
  Sent: Thursday, July 12, 2007 9:08 AM
  To: pianotech at ptg.org
  Subject: [PHISHING]: Re: Setting Dip on the Bench




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    David
      I'll get to the bench reg part but first This thread brings up the
question where & one measures dip & with what does one use to do this. A dip
block, a ruler? As long as I've done this work I've used a simple distance
gauge that fits under the key. It's .375 in diameter.  It's a small piece of
steel with a thin handle brazed to it. PIcs below . The cut out in the face
of it fits right up into & against the pin.

   My Dad made it 40 years ago.
    It's easy to use,visual & quick. Just Insert the jig & if the dip is
shallow, the key rises, indicating the need to remove punchings....again
visual...quick.  If dip is deep...tap tap. The need to add punchings.  I
don't sit at eye level to do this even at the piano.
    Also the sharps...always a sticky wicket.  Again insert it under the
white keys & see what's happening then correct it. The width of the gauge
allows easy access between the white key pins to access the key pins to the
sharps
    Being a dip priority regulator I've always like to stay a bout a .390
dip.  SO I place gauge  under the key & tap the top of the key with my
finger then  listen & feel for a slight .015 gap.  Or a single wrap of
masking tape around the circumference of the gauge makes it zzzzactly.390.
In that case the gauge should just slide in with no key rise or no tapping
sound.
     For the bench part Eds suggestion of duplicating the keybed environment
is good & possible to get close. My non -rookie shop helper Keith Roberts
came up with a slick way to get very close on the bench.. (been the re to
long to be a rookie any more..darn)
    HE/we uses the gauge to set dip on all the C notes sitting at the piano.
We then place the action on the reg bench & remove the stack. The keys fall
down & rest on the punchings  Then we the use a straight edge set between
our test notes. Using our test notes we remove or add punchings till he/we
a fairly straight line between test notes.  It's quick easy & any shop
rookie can get very close. Then reinstall the action stack & keys in the
piano & tweak further until it's dialed.   At this point I use the after
touch feel I like.  Meaning it's just a tactile sense from years of doing
this.  Or place a card of .040 or .050 on top of the front punching & then
depress the key.. If the dip/aftertouoch is right the jack should just begin
to escape.
    Make sense?.....yes..no?
    Dale
    Does anyone have a reliable method of setting key dip (grand) on the
bench
    so that it remains accurate when the action is moved back to the piano?
I'd
    sure love to retire from sitting down at eye level to the key bed.

    David Love
    davidlovepianos at comcast.net
    www.davidlovepianos.com



  Dale Erwin--Piano Restorations
  4721 Parker rd
  Modesto, Ca. 95357
  Shop 209-577-8397
  Web site http://www.Erwinspiano.com
  Restoration & Sales of
  Steinway & Sons & other fine pianos.
  " Soundboards by Design"






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