[pianotech] balance hole jig

[David Skolnik]

JIm -
Continuing to live dangerously  (unmasking the simpleton behind the 
curtain), you said:
>The jig's center pin is a .146 balance pin stub.

Would I assume that if the key frame used .162" pins, or other, you 
would modify the jig accordingly?  Also, is it correct that you are 
keying off of the original balance hole?  If so, and 'ovaling' has 
taken place, how do you accommodate?  Have you used this system to do 
an entire set?

Regarding the data you're seeking, I'm sure there are many others, 
but Bob Marinelli at Pianotek or Mike Morvan at Blackstone 
Valley  www.pianoandorgankeys.com  would likely have something useful to say.


David Snoc


At 09:23 AM 7/27/2012, you wrote:
>David S ( no c) said:
>
><It seems like it would depend upon the length of the straight 
>portion of the key stick for a particular model. I must not be 
>understanding the question.
>
>Yeah...I hit the send button before that post had fully ripened.
>
>What I meant to say was, tooling up to make a "for sale" jig means 
>making the jig fit many different applications and key configurations.
>
>This jig works if it has a flat plane to sit on.  Any key which has 
>no sole would work fine with the jig as designed, since the keys 
>bottom offers a nice flat plane for the jig to sit on.  On the other 
>hand, some keys  have a sole. Depending on the length of the sole, 
>and on whether that sole is proud of the bottom of the key or flush 
>with the bottom, a one size fits all jig length becomes a bit tricky-er.
>
>My question was how common is it for the sole to project. Those of 
>you who have been looking at key bottoms for 30 yrs, I thought, 
>might have more of an idea of how common the projecting sole is, and 
>maybe even how wildly the relative length of that sole varies.
>
>My own private plan, since the jig is so dead easy to make, was not 
>to worry about it, and spend the couple of hours to make a custom 
>jig if some key bottom configuration comes along that doesn't fit 
>the existing design.
>
>Jim Ialeggio
>
>--
>Jim Ialeggio
>jim at grandpianosolutions.com
>(978) 425-9026
>Shirley, MA