DougN wrote:My local plywood supplier suggested that a non-hardening glue would be better as hardening glue can cause plywood delamination over time due to expansion/contraction /vibration of the sheet. If the outer layer of the plywood is hard glued, then the inner/opposite layers will want to shear away under stress.
Maybe someone with more expertise can comment. I was leaning towards titebond III or similar for my all-wood build (not a foamy),
Thanks,
Doug
Doug:
I've been working with wood for over fifty years and have never heard of this issue. In fact, I don't even know what he means by a non-hardening glue. The glue used to laminate plywood -phenol-formaldehyde- seems cure as hard as a rock. Perhaps some body else can straighten me out on this.
A proper wood joint will not fail with either Titebond 2 or 3 (the wood will fail first). I prefer TB2 since it'll stick to previously exposed surfaces with TB2 but you can't do that with TB3.
T