ORIGINAL: Campgems
The smell and the lack of a suitable cleanup for tools and such, along with the issue of heat generated during cure, weight, smell, Did i mention that before??
Huh??? Poly Resin is about the most easy to work with. It smells great, the drying time is tunable to your liking, and clean up is as easy as a cup full of acetone and a few paper towels.
Balsa and poly resin are incredibly strong. The balsa takes the place of a fiberglass sheet. Balsa soaks up the resin very nicely and becomes a rock.
I'm not talking about using a gallon of resin here, but using a small brush and putting it on like you would epoxy.