[CAUT] pre-stretching new string?

[Ron Nossaman]

> I just went down and measured note #40 on a 1963 Baldwin L we have yet to
> re-string, which had 1mm positive bearing when we prepped it last summer:
> 
> The bridge surface is presently THREE MILLIMETERS LOWER ( 1/8th" )
> 
> i.e.: TWO MILLIMETERS NEGATIVE, relative to the front and rear terminations.
> (RH 34%)
> 
> (an improvement from measurements I last posted 05/03/07; RH 9%)
> 
> .2mm cap rise I can see, given the approximate 6mm thickness of this cap at
> note #40, but 3 whole millimeters drop?
> 
> Three millimeters, now that's a meaty number.... where'd all that wood go?
> 
> (inquiring minds, even wandering ones, need to know ;>)
> 
> best regards
> Mark Cramer

All that wood is still there, hanging under the piano in 
reverse crown, with maybe a nice big S curve too. Dead 
soundboards don't play fair when you're trying to correlate 
humidity to soundboard reaction. It needs replaced with a real 
board when the restring comes up on the administrative wheel.
Ron N