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<DIV>In a message dated 10/17/2003 8:15:19 PM Pacific Daylight Time, Crashva=
lve@aol.com writes:</DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue =
2px solid"><FONT face=Geneva color=#000000 FAMILY="SANSSERIF">In a mes=
sage dated 10/17/03 10:51:55 PM, Erwinspiano@aol.com writes:<BR><BR><BR>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000=
ff 2px solid; MARGIN-RIGHT: 0px" cite="" TYPE="CITE"></FONT><FONT face=
=Geneva color=#000000 FAMILY="SANSSERIF"><BR></FONT><FONT face="Time=
s New Roman" color=#000040 size=3 FAMILY="SERIF"><STRONG>If you took o=
ut the old boards in 5 Steinways of any give model you'd find some way thick=
er or thinner than the others but with a general range or parameter. I've me=
asured a 70's CD S&S B with a soundboard max. thickness of .310 in the m=
iddle as S&S & other are generally thinned around the edges for=
flexibility (diaphramized as S&S says) That would be conside=
red thin for a B. On the other hand I've seem them as thick as .375 ish. The=
thin one sounded totally awesome & I was surprised it wasn't a "thin" s=
ounding piano. In my work I'd be using Sitka panels & opt for=
something about .340 to.360. For smaller models thinner is fine, .300 to .3=
25ish. By the way You own an A I'm told & I've found it common for =
them to be .350 ish. Ds & Mason BBs can be as thick as .400. Not su=
re this more than incidental trivia but you asked.</STRONG></FONT><FONT face=
=Geneva color=#000000 FAMILY="SANSSERIF"><BR><BR></FONT><FONT face="=
Times New Roman" color=#000040 size=3 FAMILY="SERIF"><STRONG> Re=
gards--Dale Erwin</STRONG></FONT><FONT face=Geneva color=#000000 FAMILY=
="SANSSERIF"><BR><BR><STRONG> </STRONG></FONT><FONT face=Geneva col=
or=#000000 FAMILY="SANSSERIF">Dale,<BR>have you ever tried to measure bo=
ard thickness on a board in place ? I expect it could be easily and very acc=
urately done with a depth mike whose spindle is cut down a LOT, but this req=
uires drilling a hole in the board.<BR>Regards,<BR>Glenn Coleman</FONT><FONT=
face=Geneva color=#000000 FAMILY="SANSSERIF"></FONT> </BLOCKQUOTE></B=
LOCKQUOTE></DIV>
<DIV><FONT face="Times New Roman" color=#000040><STRONG> &nbs=
p; <FONT size=3>Glenn ,Yes I have & you are correct.=
First it's possible to take measurements around the bolt holes with a wire =
caliper. 2nd small holes drilled behind the bridge or around the edges =
& later filled with a toothpick is kosher, but why would you wish to do =
this? </FONT></STRONG></FONT></DIV>
<DIV><FONT face="Times New Roman" color=#000040><STRONG><FONT size=3>&=
nbsp; I've done this only once & that was to diaphramize a very th=
ick board in a Yamaha C-7. I also refinished the board afterwards so no big =
deal. The board was .400 thick in the middle and tonally a bit stingy. Thinn=
ing it helped to reveal a more lively tone i.e. better sustain.</FONT></STRO=
NG></FONT></DIV>
<DIV><STRONG><FONT face="Times New Roman" color=#000040 size=3> =
Regards-Dale</FONT></STRONG></DIV></BODY></HTML>