[pianotech] Agraffes -- Mason & Hamlin BB

Isaac Sadigursky irs.pianos at earthlink.net
Wed Mar 4 19:44:31 PST 2009


Hi, Nick!
check-out with Herb at Schaff....They  inherited a lot of stuff from   
APSCO and there was a huge BUCKET full of ORIGINAL M&H 9/32"  
agraffes ...Good luck!!! isaac
On Mar 4, 2009, at 1:07 PM, Nick Gravagne wrote:

> Hello All,
>
> Agraffes recently removed from a Boston M&H BB (#35000 circa 1927) are
> dimensioned at 0.280" stud (includes threads), and near as I can  
> tell the
> TPI is metric at 0.75 but I don't take this to be accurate. Still, I
> couldn't get the gage's 32 or 36 TPI to line up right with the  
> threads.
>
> The standard 1/4" stud just falls in the hole.
>
> A prior tech removed the originals and "cleaned" them up by sand  
> blasting,
> or so it seems by the slightly pitted appearance; otherwise nothing  
> is bent
> or weird looking. The string holes have not been touched or redressed.
>
> Pianotek does not offer this size (that I can see from the catalog),  
> neither
> does Schaff. The idea of plugging and re-tapping for standard  
> agraffes is,
> of course, possible but relatively time consuming, and there is no  
> room for
> error.
>
> Anyone replaced these recently, and if so with what? Any  
> reconditioning
> anecdotes worth sharing?
>
> Thanks
>
> Nick Gravagne, RPT
> Piano Technicians Guild
> Member Society Manufacturing Engineers
> Voice Mail 928-476-4143
>
>
>




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