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Brian Nystrom

wrote:
On my wood Tolman Skiff, I have found a couple of places where two
layers of wood epoxied together are delaminationg. Nothing serious
but if left unfixed would lead to problems. Basically, the directions
said to paint all surfaces with thin epoxy and then before it cured to
spread the thicker and then to join the pieces. So, how am I getting
delamination?
I live in Florida so it is subject to extreme humidity and heat.

I think you may have misinterpreted the directions. For laminating, you
need to coat both surfaces with epoxy and allow it to soak into the
wood. You may need to apply more to areas that are particularly
absorbent. Once the surface is sealed, you need to thicken a batch of
epoxy with silica, wood flour, microballoons, etc. and spread that over
the surfaces to be laminated. Clamp the surfaces lightly and allow it to
cure. The purpose of the thickener and light clamping is to prevent the
epoxy from being squeezed out of the joint.