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Flap construction

Subject: Flap construction
From: Graham Singleton <100421.2123@compuserve.com>
Date: Wed, 26 Nov 1997 19:02:07
>>Does anyone know why PVC (as opposed to styrofoam) is used for the flap
rib
sandwich?<<

It's much stronger than styrofoam, and usually higher density.
Graham


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