[pianotech] Rendering fix

[Jim Ialeggio]

Ron wrote:

<I think I'd pitch the existing felt altogether, install a strip of new 
butt felt just in front of the counter bearing bar

Right, that was my plan

< and under string felt to hide glue residue but not contact the strings.

good idea...make it purdy

<If the corroded strings aren't dragging across inches of the new felt, 
where's the thwart?

this is one of those spots where a microscopic problem creates an effect 
whose magnitude seems at first glance to be way beyond the effect one 
might expect. It also is an effect which is frankly hard to believe, 
until you see and test the havoc it wreaks...that leaves me with my 
guard up...Murphy just lurking, waiting expectantly with a smirk.

<Also, since this felt isn't load bearing, but rather just contact 
damping the strings, why wouldn't a non absorptive artificial material 
work better here, like polyester?

I have been considering this for a while, and have a source for some 
better quality polyester felt than the craft stores carry, though the 
$50 min will last me well into the next millenium. The color is a 
reasonable scarlet, but butt felt it ain't, as its only 1/8 thick.  I 
guess I could make a built up lamination of the polyester, then make 
some tacky Christmas ornaments with the rest <G>.

Jim Ialeggio





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