Does anyone know what the lifespan of the resin is? Is it longer than 6 months? For example, see the link here that states this resin has a 6 month lifespan. Wo

Does anyone know what the lifespan of the resin is? Is it longer than 6 months? For example, see the link here that states this resin has a 6 month lifespan. Wondering if you can get them for longer lifespans measuring in years. http://www.dickblick.com/products/castincraft-clear-polyester-casting-resin/ http://www.dickblick.com/products/castincraft-clear-polyeste...