Measuring BR depth.

[Roger Jolly]

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Hi Alan,
               I ground down a hammer shank so I could block off the 
top of the  BR hole inside the mortice.   Then measured with a 
machinist depth gauge, from the bottom of the shank, to the bass of the key.
Researching the spongy touch problem, I must have measured several 
hundred different keys, on many different makes and models of 
pianos.   Old and new.
The problem was far more endemic than I ever imagined.   The only 
manufacturer that had, what I would consider accurate consistency, 
was Yamaha.   Well,  the way machine every thing, should I be surprised? =-O
Jon gave a good suggestion. Place the key on a solid wood surface and 
then ream away.  Sounds dummy proof to me.
The actual reaming of a complete set only takes us about 20mins.

regards Roger



At 04:05 PM 2/8/2006, you wrote:

>The happy pirate wrote a couple of good posts this AM about 
>checking/modifying the depth of the BR hole in the keystick.
>
>What's the easiest way to accurately measure that depth?
>
>Alan Barnard
>Salem, Missouri
>

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