Plate removal ???: Need more suggestions

[David Love]

Thanks Jim:

I think I'll wait on the jack method.  There is no evidence of the carriage
bolts on the underside of the keybed.  Removed the legs to look as well.
Another possibility is that the bottom of the bolt is countersunk on the
underside of the rim above the key bed.  In other words, the key bed must be
removed to get the block out.

You know, the condition of the board and block is looking better and better
all the time.

David Love

----- Original Message -----
From: <JIMRPT@AOL.COM>
To: <pianotech@ptg.org>
Sent: July 20, 2001 10:42 PM
Subject: Re: Plate removal ???: Need more suggestions


>
> In a message dated 20/07/01 11:52:45 PM, davidlovepianos@earthlink.net
writes:
>
> << It seems that the plate and block may have been assembled outside the
> piano with the carriage bolts fastening to the underside of the block
where
> the block sits on the inner rim.  Then the block/plate was dropped into
the
> piano and the block glued to the inner rim.  Es posible?  If so, this
would
> make removing the plate more difficult, no? >>
>
> Well the scenario you have put forth is conceivable but rather unlikely.
> There are several ways to tell:
>
> 1. Put a jack under the pinblock and raise it until the block pops free
from
> the rim...this will tell you sevral things in the following manner(s):
>
> a. The block won't pop loose but the keybed is getting further away from
the
> block and a crack is appearing between the keybed and rim....not good but
it
> tells you that the glue joint on the keybed needs repair! :-)
>
> b. Said jack under pinblock and nothing moves.......this 'could' tell you
> that the bolts are indeed through bolts and you need to look
> again...closer...for any filled holes unde the keybed which would indicate
> through bolts.
>
> c. Said jack under pinblock and nothing moves.......this 'could' tell you
> that the bolts
> are fastened to the block only but that the block is screwed and/or
doweled
> to the rim under the plate.
>
>  David these are the only three possibilities I can think of right now. As
a
> last resort you 'could' drill out the head of these carriage bolts, pull
the
> plate and then determine how the bolts were installed.....knock out the
bolts
> and replace with new.
>
>  I still kinda favor the through bolts to the bottom of the keybed as
someone
> else suggested as I have done several Chickerings with this type bolt
> thingees.
> Jim Bryant (FL)