So I dial up www.systemthree.com to see about ordering epoxy for new construction. Granted it been several years since I ordered epoxy- and I always liked System Three stuff. Resin plus hardener, then stuff you mix in for the porpose you need. Now I find they have a new approach- a resin and a hardener with additives- different for each application. So to build a S&G boat you need 4 different resin hardener combinations- for structural joints, lamination, filleting, fairing. They call it Silver tip. I didn't even bother to look up the price. Anybody use this stuff and is there really an advantage in this new formuklation