405 Filleting Blend Adhesive Filler is a strong, wood-toned epoxy filler. Add it to your epoxy mix when making epoxy joints and fillets on naturally finished wood. It mixes easily with epoxy. This product helps you create smooth fillets that will need only a little sanding. Its color is a consistent brown.
405 Filleting Blend can be blended with other WEST SYSTEM Fillers to modify the shade of your epoxy mix. You can blend it into any WEST SYSTEM 105 Resin/20X Hardener combination, G/flex Epoxy 650, or G/5 Five-Minute Adhesive.
Gluing plywood structures together with epoxy fillets saves a lot of time when making joints. It can also reduce the structural, in comparison to traditional building methods such as using wooden cleats and screws. The strength and gap-filling qualities of epoxy eliminate the need for precisely fitted wood cleats, which also require time and skill to create.
When glued with conventional, non-gap filling adhesives such as resorcinol glue, wood cleats must be well fitted, and wide enough to provide sufficient gluing surface. They must also be thick enough to allow you to drive in screws.
Building with epoxy fillets is especially beneficial when attaching bulkheads to hull sides, or hull sides to hull bottoms, where the faces of the plywood come together at ever-changing angles.