[pianotech] Measuring Crown Radius

Delwin D Fandrich del at fandrichpiano.com
Thu Jul 14 16:08:22 MDT 2011


Unless there has been a change in process the assembly is also dried down
prior to being glued in the rim.

ddf

Delwin D Fandrich
Piano Design & Fabrication
6939 Foothill Court SW, Olympia, Washington 98512 USA
Phone  360.515.0119 — Cell  360.388.6525
del at fandrichpiano.comddfandrich at gmail.com

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ron Nossaman
Sent: Thursday, July 14, 2011 2:22 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Measuring Crown Radius

On 7/14/2011 4:07 PM, John Delacour wrote:


> Before I go on, is that roughly what takes place? Please tell me if 
> I've got things wrong.
>
> JD

In CC crowning, the panel is dried down, then glued to flat ribs. Panel
expansion as it takes on moisture then bends the ribs into a crown. The
piano case isn't involved in the process, and the ribs needn't necessarily
be dried down.

Ron N



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