half-punching

[ed440 at mindspring.com]

Barbara-

A quick test on note #1 on a 1960's B action reduced down weight by 3-4 grams.
Whatever "acceleration" is produced by the hump would be lost.  Would anyone notice?
Check to make sure other parameters still work, keys still fit in the case.
I think it's something to keep in the bag of tricks.
A clever supplier could make a set of alternative bearing blocks that gave a sharp edge at the center line of the balance rail pins. (Maybe someone on this list?)

Ed Sutton


>    ----- Original Message ----- 
>    From: Barbara Richmond 
>    To: Pianotech 
>    Sent: Saturday, October 07, 2006 6:55 PM
>    Subject: half-punching
>
>
>    Hi all,
>
>    Back to using half-punchings.
>
>    Has anyone ever tried gluing a thinnest card half punching on the bottom of a Steinway key that already uses the half round balance rail bearings?  Results?
>
>    Thanks,
>
>    Barbara Richmond, RPT
>    near Peoria, IL