[Brett]

Epoxy will bond just about anything if prepped correctly.
Works extremely well in wood to wood joints. Stronger than the wood.

 

[DuckNut]

Got a picture of the layup?

Depending where the joints are located, should be fine.

 

[FlatCat]

No pics to post yet, but basically i'm referring to the supports (cut to act as rod holders), joined to the walk around gunnels. I thought my plan was solid but don't want to take any compromising shortcuts.

 

[Brett]

Epoxy to plywood joints, no screws at all...
Hasn't split or cracked yet in a year plus of hard use.

 

[FlatCat]

What is the darker material built up at the joints, just extra/mult applications of epoxy?

 

[firecat1981]

nope that epoxy fillet material, most likely wood flour mixed with epoxy, you can also use micrballoons.

 

[Brett]

The brown material is a mix of FLAG epoxy, wood flour and milled glass fiber.

 

[FlatCat]

Why would you use a thickened e mix vs some glass cloth?

 

[Brett]

Fiberglass loses strength in hard 90° bends.
Glass strand has great tensile strength but weak shear resistance.
A transition curve allows stress to transfer evenly across the corner.
The epoxy fillet material creates a joint which is stronger
than the adjoining wood and with a layer of tooling cloth over it
makes for an extremely strong and durable wood to wood joint.