: I have made up three batches with two different resin systems (West
: and USComposite) and they all worked out well. I must have
: simply forgotten to add the hardner.

: I always mix the fillers into the resin first, because it gives a
: longer net pot life. YMMV.

Need to spend some serious time building with polyester resin, you'll get so fast that you won't have to ever again worry about pot life with epoxy :)

In the summer having 10 minutes pot life for a quart or more of resin with poly is a luxury, usually more like 5 minutes, you learn to use it very fast so you don't waste it, or risk it catching on fire with a big pot cooking off all at once.

Bill H.