here are a couple of sites....BlackLab has sold off the decoys part of their business to a new partner....check www.decoymolds.com
R&R Sports has a site and they seem to have the cheapest aluminum molds available...as well as the materials
Check the TakeEm site for a pretty good reference synopsis of the entir process....i like their site alot and have gotten quite a few excellent tips from them!
Lastly....do a search on e-bay....there always seems to be some gunning decoy molds on there....and I would assume the beads are there too!
I did not mention this, but there is a difference from the urathane foam and the beads.....and i also meant to mention that there are exact formulas for mixing (since the foam and beads expand....so have a claculator handy)