Hi Kevin,

The specific requirements of the resin will probably drive your supplier choice much more than location will. Epoxies are very specific things, there are thousands on the market and they are generally designed for different applications and have different properties and performances. You haven't mentioned much about the properties you need in the resin (are we talking clear, filled, high temperature, UV stable? etc.) but these will almost certainly determine where you get it from. Just one observation on your specification though; I would *guess* you're talking about some sort of casting resin; if you are and you want to be able to cast 4 cubic feet of resin in one go at a depth of 4 inches then you'll be needing a VERY slow system indeed, so slow that you'll certainly have many hours of working time because you're probably into a 72 hour initial cure territory.

In the USA you probably want to start with the larger distributors like Composites One but you could (and probably should) test a number of clear products from the likes of Smooth On, Entropy Resins, Ecopoxy; there are lots - you'll probably need to test a lot to find what works well for your process. After that, worry about price and proximity!

Good luck.