hi Jimmie,I use the smooth-on moldmax to do my mold and the smooth-on feather lite to make my crankbaits,i dont know the alumilite product but I can tell you that the smooth-on products are awesome!!they work realy nice for me and a lot of others here in TU.The featerlite is a polyeurethane resin with a very low density and it's the best stuff to use for lure casting!for me.Go and take a look on the web site.cheers,Dan