[pianotech] key making specs

jimialeggio jimialeggio at gmail.com
Mon Jan 3 10:07:33 MST 2011


I've done quartered maple shoes twice, on a mentor's advice, and will 
never do it again. Basswood or poplar in the future.

Noise is the problem. There is too little room for very slight 
inaccuracies, too little room for wear.  I found that the balance holes 
had to be just shy of an interference fit and relieved to only 1/16 for 
proper clearance. If the key dropped slowly of its own weight, it was 
way too loose and made noise. The key had to be snugged down onto the 
balance felts by slight pressure. This tightness was required to avoid 
clicking, but then made inserting punchings a complete chore because the 
keys did not lift easily to insert the punchings(key leveling with the 
stack on)....no, no, no,  never again for this puppy...

I've made my own mahogany buttons, but see no reason to wrestle with 
maple. Why?  it's not very stable, and the hardness is too 
unforgiving...what exactly does it buy you in a positive way?

Jim I
> Opinions about having keys made with maple shoes and maple buttons versus
> all bass wood?  Sizing issues and noise versus longevity are the issues.
> All the keys I've had made have both maple buttons and shoes but I'm not
> sure I like it.
>
> David Love
> www.davidlovepianos.com
>
>
>
>


-- 
Jim Ialeggio
grandpianosolutions.com
978- 425-9026
Shirley, MA



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