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Trix and I pressed up a S&S O board today. We tried using tight bond
again but tried to get a better feel for just the right amount of glue to apply
so that only a small amount of squezze came at the out when we turned up the
40 P.S.I air pressure. It worked much better and the samller amounts of glue
were more easily cleaned up with damp rags and dry paper towell. With only 11
ribs the spacing between cauls was wider and 1& 1/2 hrs. This will probably
continue to be our chosen method.
Also on a different subject ,on occasion we've had the ribs scoot sideways
as we apply pressure (this happened with go bars to) so we install short
center pins into the ribs glue surface to keep them from skidding sideways when
the pressures turned up.
Dale Erwin
Erwins Piano Restoration
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