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<DIV><FONT face=Arial size=2>Your tuning pins are too long. The bottoms should
not protrude below the bottom of the pinblock.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I don't know what kind of pinblock support jig
Schaff sells, but the one I use presses a thick hunk of pinblock material, maybe
ten inches long, flush up under the pinblock. Using a good support like that,
you MUST use tuning pins that do not protrude through the bottom of the
pinblock. For you to have your pins sticking out the pinblock bottom like I see
in your photos, you must be pounding them in with no pinblock support directly
under the pounding location.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I use the #PBS-1 Deluxe Pinblock Support from
Pianotek (page D-34) - not only does that type of jig support a large area of
pinblock, it also precludes one from using tuning pins that go beyond the
pinblock bottom. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I see they also offer a pinblock jack - kinda looks
like a screw jack for a car. Perhaps you are using a jack similar to that one.
It only supports the pinblock at a small location - I'm sure it is quite
adequate to prevent plate damage, but it does not help to keep the pinblock
together like the Deluxe support does.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>So the bottom line is: use shorter tuning pins and
the other type of pinblock support might also help.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I know a couple times when I have driven a tuning
pin that did not extend below the bottom of the pinblock, but the pin location
was just beyond where I had my pinblock support, I have had the bottom ply of
the pinblock tear out - that's why IMHO, the larger Deluxe Support helps one
avoid that situation.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Terry Farrell</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV>i'm driving tuning pins on a samick grand. i have the PB supported
with the PB support from Schaff, but the bottom
lamination is separating from the PB. i've included pictures. i've
got the nuts on the PB support as tight as they'll go, but the
separation still happens. i've made my through half the pins; i
just wanted to see if anyone thinks if i should stop. by the way, i
pulled a small piece of the lamination off, so that's why there's a chunk
missing in one of the photos. </DIV>
<DIV>daniel carlton</DIV></BLOCKQUOTE></BODY></HTML>