I once used a balloon connected by a thin tube to raise a sunken crack on a
violin. Put the ballon in through an f-hole and carefully pumped it up
with a bike pump till the sunken part was sufficiently raised. & I glued
and shimmed successfully. .
On Tue, Dec 13, 2016 at 7:52 PM, Martin Spaink <
[log in to unmask]> wrote:
> Dear Chris, and Owen,
>
> Somehow I tend to enjoy these operations, as it is always interesting,
> what exactly is the problem, where does it originate, what to do about it
> and how? I've opened quite a few harpsies so far. Once I did a job on a
> German 2x8' single which had a split board in the treble, and the shorter
> end had walloped enormously, people started asking if that was the
> money-slot, ha ha.. Because the wavy bit was so out of control, I first
> sandwiched the crack area between two padded blocks with a damp cloth on
> the underside of the board. The next day it was flat and dry again, and I
> could get busy preparing for shimming. I usually use scaled-to-function
> go-bars inside the box, and clamp some bar over the instrument so I can
> again use go-bars on top as well. Depending on everything, I might decide
> to glue a cotton band-aid over a glue-line. Good luck, enjoy and fix it!
>
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Note: opinions expressed on HPSCHD-L are those of the individual con-
tributors and not necessarily those of the list owners nor of the Uni-
versity of Iowa. For a brief summary of list commands, send mail to
[log in to unmask] saying HELP .
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