flange bushing

[David Ilvedson]

It would be interesting to know how bush when making flanges in the Renner factory or wherever.    
Do they tear each piece of cloth before bushing?   I doubt it, but it would be nice to know how it is done in the factory.   

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "John Delacour" <JD at Pianomaker.co.uk>
To: "Pianotech List" <pianotech at ptg.org>
Received: 1/13/2008 1:30:35 PM
Subject: Re: flange bushing



>I have always torn cloth and not cut it, and I consider this most 
>important for flange bushing.  The reason is that the line of the 
>tear follows exactly the line of the yarns, which is impossible to 
>achieve by cutting, no matter what fancy equipment you use.  If for 
>some reason you object to "fuzzy edges" then these can be quickly 
>trimmed off with scissors.

>If the cloth is cut along a line askew to the yarns, as the strip is 
>repeatedly pulled through the wood, the strip will fray, lose years 
>and become effectively narrower, so that consistent results cannot be 
>achieved.

>Careful restorers also pay attention to the difference between warp and weft.

>JD