Join Date: Feb 2011
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Afun... One thing comes to mind when you describe the encapsulation of the pine between two skins of FRP. Now you will face the same shortfalls that regular cored FRP layups face. This is the problem of water intrusion wherever you place a through bolt or screw from the outside. This will permit water intrusion and subsequent rot that creeps between the FRP skins. The solution has been to grind out a larger hole than needed, through only one skin, then to fill the hole back in with an epoxy/filler mix to seal the core. Then re-drill or tap the hole to attach the fitting. The wood is relatively soft so a solid core at those points will prevent the wood core from moving (compressing) under the load of the bolts.
Did you do a test layup to see if your skins bond ok?
Sounds good otherwise.