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<DIV><FONT face=Arial>What Dale said.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Support jack? A pinblock support jack? I'm having trouble
visualizing how a pinblock support jack could cause the plate to crack. You
reference "releasing" the jack. What type of jack is it? I'm only familiar with
screw-type pinblock supports.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>When you put the pinblock support in place, I guess I've
never been instructed one way or another, but I just snug it in - I don't jack
the pinblock up at all. So if the jack didn't move the block, and hence the
plate, and then you remove the support with tension on the strings, okay, so the
plate/block will adjust some tiny little bit, but why would it cause a crack?
Seems to me the plate would be in that position anyway and would be experiencing
whatever stresses it does either way.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I just don't see how removing a pinblock support would
cause the plate to crack. Thoughts?</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Terry Farrell</FONT></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV> Check
the Archives for <A
href="http://www.Lock-n-Stitch.com">www.Lock-n-Stitch.com</A>. Been lots on
it<BR> Dale Erwin<BR><BR>-----Original Message-----<BR>
<DIV><FONT face="Arial, Helvetica, sans-serif">I have a Chickering 1/4 grand
in the shop with a hairline crack on the treble strut between the two capo
sections. This is right where a nose bolt passes through, so the crack
extends from the top of the strut to about halfway through. <BR><BR>I'm
sure it was my error that caused the crack. (I restrung the piano,
chipped it, and had it up to pitch before realizing that I still had my
support jack in the high treble. With all the string tension, it was
really wedged in. It was very difficult getting it to release and when I
released the jack, I heard the crack.</FONT></DIV>
<DIV><FONT face="Arial, Helvetica, sans-serif">SNIP<BR>Gordon Large,
RPT<BR></DIV></FONT></BLOCKQUOTE></BODY></HTML>