Agraffes

[Farrell]

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Re: AgraffesThank you very much Ron for sharing your tool shape with us. =
Please forgive my ignorance, but two more questions. On the far right =
side of your drawing is the end profile of the tool. I don't understand =
the offset line bisecting the circle - I suspect it is the cutting edge, =
but I guess I'm having a hard time picturing it - is it more-or-less =
like a countersinking tool? (I'm sure a grinder dude would know exactly =
what it is). Please explain. Also, I do not understand exactly what a =
donut shape for the agraffe center is. I eat 'em so quick I never quite =
notice their shape - and besides, shape would not affect their taste! Do =
you go for a continuous arc through the agraffe center, or do you =
maintain a 1/16" or so flat portion through the center as Roger Jolly =
described? I have a 100-year-old Bechstein waiting for a rebuild in my =
shop that has 88 of those little bad boys - they have been staring at me =
for more than a year now and I have felt VERY intimidated (although I =
have tried not to show it). Thanks big time!

Terry Farrell
Piano Tuning & Service
Tampa, Florida
mfarrel2@tampabay.rr.com

  ----- Original Message -----=20
  From: Overs Pianos=20
  To: pianotech@ptg.org=20
  Sent: Friday, April 13, 2001 5:45 AM
  Subject: Re: Agraffes


  Terry, Roger and list,


  Included below is a drawing of the agraffe cutter profile we have been =
using for the past few years.



  We fax this drawing through to our local tool and cutter grinding man, =
ordering four at a time (double ended). As Roger said earlier, you cut =
from both sides of the agraffe. We use a small milling machine with =
depth stop control, to ensure that we end up with a donut shape in the =
centre of the agraffe. The easy way to check this is to cut a test =
agraffe in half.


  Regards,


  Ron O
  --=20

  _________________________

  Website:  http://www.overspianos.com.au
  Email:      mailto:ron@overspianos.com.au
  _________________________

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