Two felts better than one? / was: Andre's Front Punchings

[David Love]

A thin strip under the back rail cloth and the cloth only glued down on the
proximal side definitely helps cushion the blow and noise of the key
resetting.  

 

BTW why would putting a thin cloth punching under the conical, firm
punchings at the key front not defeat the purpose of having a firm landing
bed for the key which the Wurzen conical punchings provide on their own?

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

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Jurgen Goering
Sent: Wednesday, February 06, 2008 9:20 AM
To: pianotech at ptg.org
Subject: Re: Two felts better than one? / was: Andre's Front Punchings

 

This interests me. Quite a few vintage pianos originally had two cloth
punchings on the front rail pins. The French liked to do this, and it seems
to have been the standard for Blüthner for a long period of time. Just
recently a client contacted me, looking for the thin (blue) felt punchings
that were used in conjunction with the cloth punchings for his Blüthner
patent action grand. He maintained there was quite a difference between one
thicker punching and two thinner ones, and that for the intimate tone of his
piano nothing else would suffice. Perhaps this has to do with the unique
regulation and feel (no aftertouch) of these pianos.

However, I am getting increasing requests for the same thing for the back
rail. Many pianos had a thin felt strip (1.5 - 2 mm) underneath the back
rail cloth. It appears that 2 mm of felt under 5 mm of cloth is more quiet
than one 7 mm strip of cloth.

Can anyone corroborate this?

Jurgen Goering





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