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<DIV>In a message dated 11/12/2004 4:12:29 AM Pacific Standard Time,
davner@kaosol.net writes:</DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><=
FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000
size=2> <FONT size=3>Hi Dave</FONT></FONT></BL=
OCKQUOTE>
<DIV><FONT size=3> Since so much of the sound we recognize as the pia=
no
sound comes from the condition of very top of the hammer it is therefore
critical that it be clean & smooth & as free from small fibers as
possible. Don was referring to using a new sample Ronsens in a voicing
demo.</FONT></DIV>
<DIV><FONT size=3> However when using new sets My SOP is to file new=
sets
starting with an actual reshaping of the bass using 80,120, 220, 3=
20 ,
400& sometimes 600. The finer papers are really polishers but it is the =
last
step in a procedure that creates very "clean" sound from a new set of
Hammers.</FONT></DIV>
<DIV><FONT size=3> Dale Erwin</FONT></DIV>
<BLOCKQUOTE
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><=
FONT
style="BACKGROUND-COLOR: transparent" face=Arial color=#000000
size=2><BR><BR><BR>> . . . . . They still needed a little more, so I =
filed
them with 1,000 grit<BR>> sandpaper . . . . . <<BR><BR> =
Isn't 1000 grit about as abrasive as, say, newsprint? I'll admit
that<BR>most of the hammers I've filed are on old pianos whose hammers hav=
e
never<BR>been filed since they were built, and the string cuts are an eigh=
th
of an<BR>inch deep or more. Sometimes I'll re-file a job someone els=
e
botched. I<BR>seldom have a chance to do voicing on really nice
grands. But even there,<BR>I've never used finer than 120 grit. =
;
Using finer seems like going past the<BR>point of diminishing returns.&nbs=
p;
Does going up past 320 or so really make that<BR>much difference?<BR> =
;
I would think that under a microscope, the surface of piano
hammers<BR>would look something like an overgrown back yard or maybe an Af=
ro
hairdo.<BR>Sanding something this fuzzy and fibrous with 1000 grit seems t=
o me
like<BR>"brushing" your cat with paper to smooth out its fur.<BR> &n=
bsp;
What's the finest grit you ever use, and why?<BR> --David
Nereson, RPT<BR></FONT></BLOCKQUOTE>
<DIV></DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV><FONT lang=0 face=Arial size=2 FAMILY="SANSSERIF" PTSIZE="10"=
>Erwins Pianos
Restorations <BR>4721 Parker Rd.<BR>Modesto, Ca 95357<BR>209-577-8397<BR>Reb=
uilt
Steinway , Mason &Hamlin
Sales<BR>www.Erwinspiano.com</FONT></DIV></FONT></BODY></HTML>