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<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=2> <FONT
size=3> Hi Ron</FONT></FONT></DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=3> With so many things in our profession to cionsider I sometim=
es
think we're trying to reinvent the wheel Or in the this case the piano. All
though I hardly consider myself as having my head in the sand when it comes =
to
improvements I sometimes want to SHOUT OVERKILL. There I feel
better.</FONT></DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=2><FONT size=3> I can't ever recall tuning any of the m=
any
Steiwnays in my clientele that had any thing remotely close to what I'd=
call a stability problem because of plate fit. Some others such as ,Yes, Yam=
aha
, ocassionaly has a problem & who barely fit the flange to the
block yet still one of the worlds most stable tuning
pianos.</FONT><BR>><BR>>. . . In response to Dale's comment, I do like=
to
glass the block for, among<BR>>other things, the very reason mentioned in=
Jon's post. Sometimes you get<BR>>some drift on the block when the
screws go in and what was a nice fit is<BR>>not quite as nice. Thou=
gh a
100% fit to the flange may be more than is<BR>>necessary, it certainly
doesn't hurt.</FONT></DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=2><U><FONT size=3></FONT></U></FONT> </DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=2><U><FONT size=3> >>> I agree it isn't necessa=
ry but
to mind a preference. </FONT><BR></U><BR>Agreed. I suspect a good=
fit
all the way along can aid tuning stability.<BR><BR>> The amount of =
time
involved in this<BR>>final step is minimal compared with the problems tha=
t
can arise from a<BR>>poorly fit block. As a safety measure, and for=
my
own peace of mind, I<BR>>think it's well worth the minimal
trouble.</FONT></DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=2>></FONT></DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=2>> <FONT size=3> David,I know the type of cratfsmen you ar=
e would
not expect your flange fit to ever be a problem to the point of re=
ally
needing epoxy.<BR></FONT><BR>Here here. We fit the plank with the plate inve=
rted
also. Once it is <BR>fitted to the flange reasonably well with the screw hol=
es
drilled and <BR>screws fitted, we drill a location hole for a metal dowel in=
to
each <BR>end of the pin block to plate web interface. An inverted tuning pin=
<BR>is driven into the pin block as the locating dowel.</FONT></DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=3></FONT> </DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=3>>> Ron I do this with the plate upside down as well &am=
p;
once the block is fit the plates flipped over & then firmly
clamp the block to the flange in four places fore & aft & 3 spots
vertically so it's nice and tihgt , then re tap the block one
more time, make a final adjustment, then reclamp & drill several sc=
rew
holes, fit the screws & tighten & then drill the rest leaving the cl=
amps
in place till quite a few more screws are in before I take off the=
clamps. I like the idea you have here of a locating pin as well. =
I've
had no plate slippage with this system.</FONT></DIV>
<DIV><FONT size=3></FONT> </DIV>
<DIV><FONT size=3> Dale</FONT></DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=2> </FONT></DIV>
<DIV><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000=
000
size=2>The plate flange <BR>is de-burred with an angle grinder to allow fo=
r an
easy release of <BR>the epoxy paste, then the pin block is epoxy fitted with=
screws <BR>installed. We don't use wood screws for securing the pin block to=
the
<BR>plate. Instead, we use 8 mm countersunk machine screws. Rock maple is
<BR>such a good material for forming a fine thread, so we cut the threads
<BR>into the pin block with a tap before fitting up the machine
screws.<BR><BR>The epoxy fit-up provides a very accurate job without costing=
too
much in time.<BR><BR>Ron O.</FONT></DIV></DIV>
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