hate to disagree but
"Plywood for indoor use generally uses the less expensive urea-formaldehyde glue which has limited water resistance, while outdoor and marine grade plywood are designed to withstand rot, and use a water resistant phenol-formaldehyde glue to prevent delamination and to retain strength in high humidity."
most industrial glues will have some sort of formaldehyde based glue. i used a form a formaldehyde to preserve animals. we use formalin. it kills animals in seconds. not sure i would want my animals resting on a tissue preservative.
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