Ryan,

I have also always wondered the weight and strength difference between the two methods. I tried to set up a little experiment and do one piece with poly and the other with epoxy, however on the test piece which was 1 foot by 1 foot I could not see any weight change from either glue.

It would be cool if someone could do a right wing with one method and a left with the second to see a weight strength difference, but... It wont be me.

Rob