making key bushing cauls

David Ilvedson ilvey@sbcglobal.net
Mon, 15 Nov 2004 11:06:03 -0800


I thought people layed them on a hot-plate at the appropriate temperature....

David I.



----- Original message ---------------------------------------->
From: Joe And Penny Goss <imatunr@srvinet.com>
To: Pianotech <pianotech@ptg.org>
Received: Mon, 15 Nov 2004 10:01:00 -0700
Subject: Re: making key bushing cauls

>Hi Paul,
>Try putting the brass cauls in a pan of heated water, not boiling mind you,
>but very hot, rheostat controled.
>Joe Goss RPT
>Mother Goose Tools
>imatunr@srvinet.com
>www.mothergoosetools.com
>----- Original Message ----- 
>From: "Paul Chick (Earthlink)" <tune4@earthlink.net>
>To: "Pianotech" <pianotech@ptg.org>
>Sent: Monday, November 15, 2004 9:26 AM
>Subject: RE: making key bushing cauls


>> Subject: Re: making key bushing cauls
>>
>>
>> I'd like to see a side-by-side trial of the "Bushmaster" method and the
>> Spurlock system. I use the Spurlock system and love it, but I have never
>> tried the other. Anyone used both? Opinions? I recall can't imagine
>anything
>> slicker than the Spurlock system.
>>
>> Terry Farrell
>>
>> I've used both and have come up with a hybrid system: I use the Spurlock
>> system with hot hide glue, but with brass cauls.  The thickest brass caul
>is
>> used to hold the first bushing in place, the required size is used for the
>> other side.  Then I place a clothes iron (set on cotton) on top of the
>final
>> cauls.  This reactivates the hide glue, sizes the bushing hole in the key
>> and sets the cloth bushing to the caul.  Let stand over night. The key
>hole
>> sizing step is eliminated, as well as any easing.  Steaming the old
>bushings
>> out will also size the balance rail.
>>
>> Paul C
>>
>>
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>>

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