disrupted mortises

[ed miller]

Thanks for the advice, Michael.

What is the procedure for glue sizing the mortises?

Ed


>From: "MICHAEL MORVAN" <keymaestro at verizon.net>
>Reply-To: Pianotech List <pianotech at ptg.org>
>To: "Pianotech List" <pianotech at ptg.org>
>Subject: Re: disrupted mortises
>Date: Tue, 05 Dec 2006 20:54:07 -0500
>
>Ed,
>    In my opinion, get out as much of that PVC-E glue as possible, it is 
>not compatible with hide glue, it is rubbery and when it has saturated the 
>pores no glue will stick well accept more of the same. Then machine a 
>mortise relief cut into the underside of the keystick to get a clean and 
>square mortise to work with. Now, you might want to glue size the mortise 
>with hide glue which can help the bushing to stick in a mortise that has 
>been saturated with PVC-E glue. Try and isolate the really bad mortises and 
>use thicker sized cloths or replace the mortise entirely, you have more 
>flexibility for slop in the front rail than the balance. The services page 
>of my website shows mortise relief cuts, glue sizing and mortise 
>replacement. Good luck and remember to spare the next technician the horror 
>of fixing a bad repair, because the next technician might be you.
>
>Michael A. Morvan
>Blackstone Valley Piano
>Dedicated To Advancing The Art Of Keyboard Restoration
>76 Sutton Street
>Uxbridge, Ma. 01569
>(508) 278-9762
>Keymaestro at verizon.net
>www.pianoandorgankeys.com
>
>----- Original Message ----- From: "ed miller" <edmiller3 at hotmail.com>
>To: <pianotech at ptg.org>
>Sent: Tuesday, December 05, 2006 8:12 PM
>Subject: disrupted mortises
>
>
>>Hello,
>>
>>I'm doing a key re-bushing job. The front rail bushings were glued in with 
>>PVC-E glue. Many mortises were compromised by wood staying on the felt as 
>>I pulled the felt away.
>>
>>Any suggestions on what I can do as/or before I glue in the new felt with 
>>hot hide to ensure an even job from key to key?  I have been testing the 
>>keys for the best felt-fit with my brass cauls, there are drastic 
>>differences of fit from key to key thanks to all the wood that was removed 
>>as I was removing the PVC-E'd felt.
>>
>>Thanks,
>>Ed
>>
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>
>

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