Lowering Viscosity - Epic™ Epoxy Thinner is a clear, water-like liquid that will lower the viscosity of some Smooth-On casting and laminating epoxies. Epic™ is not a solvent and can be added in different proportions to improve flow-ability to make it easier to mix and pour or laminate. Epic™ will also aid in reducing bubble entrapment.
Increasing Flexibility - Flexer™ Epoxy Flexibilizer is a clear, low viscosity liquid additive that will lower the durometer (Shore hardness) of some Smooth-On casting and laminating epoxies. When added to the epoxy system in the proper proportion, the cured epoxy will be softer and, in some cases, can be made semi-rigid. See the Flexer™ Technical Bulletin for more information.
Adding Fillers - A variety of dry fillers can be added. Pre-mix dry filler with Part A before adding Part B. Pouring – If casting EpoxAcast™ 650 into a rubber mold, pour mixture in a single spot at the lowest point of the mold. Let the mixture seek its level. A uniform flow will help minimize entrapped air. If making vacuum forming molds, it is best to use piano wire (15/1000 inch gauge) to make vacuum holes.
Heat Curing - For best results, EpoxAcast™ 650 should be heat cured in an oven. Cure at 175°F / 80°C for two hours, followed by three hours at 300°F / 150°C. Allow material to cool to room temperature.
Painting – Cured EpoxAcast™ 650 can be painted and / or primed and then painted with acrylic enamel paints. Let paint fully dry before putting part into service.
Removing Epoxy – Uncured/ Non-curing epoxy: Scrape as much material as possible from the surface using a scraper. Clean the residue with E-POX-EE KLEENER™ available from Smooth-On, lacquer thinner, acetone or alcohol. Follow safety warnings pertaining to solvents and provide adequate ventilation.