[pianotech] Square Grand Hammer Bore Length?

[Terry Farrell]

Don't have the originals. Existing hammers shaped and bored by what appears to be a summer arts-and-crafts group of six-year-olds.

Terry Farrell

On Oct 22, 2012, at 2:25 PM, Joseph Garrett wrote:

> Terry asked:
> "Is it safe to assume that hammer bore length on a big-'ole-tank American
> square grand (Steinway, 1867) should be set similar to a modern grand piano
> - i.e. hammer shank horizontal when hammer strike point is at string level
> (or even a hair undercentered to allow for hammer filing down the road)?
> 
> And like not 1/2" overcentered? :-("
> 
> Terry,
> Although it is never 'safe' to ass u me anything in pianers, the pricipals
> remain the same. The best way is to have Ray/Ronsen duplicate the
> originals. He does the major amount of shoulder trimming, etc., and shapes
> the tails as was original....er...more or less.<G> Generally speaking, you
> will need to do additional trimming and tail shaping for the most efficient
> (? if there is such a thing in a square.<G>?) results. Suggest the lightest
> mouldings, (Silver maple).
> Go for it.
> Joe
> 
> 
> Joe Garrett, R.P.T.
> Captain of the Tool Police
> Squares R I
>