On Tue, 27 Jun 2006 03:49:36 GMT, Ernest Christley
wrote:




Put a layer of glass on the other side of the foam, then come back and
tell us how flexible it is.

Warning: Make d8mn sure you have the thing jigged to it's finished
position before the opposite side glass sets.

I made a couple of test panels on 1/4" Clark foam using one layer of
heavier glass and one layer of model airplane glass on each side. You
could lay a 6" x 18" panel across two bricks and stand on it with out
much deflection. I figured it was good enough for a fuel tank, it has
held up for twenty years.