Microballoons by Deluxe materials is the ideal for thinning epoxy and poly-ester resins to make fillets or repairing surface imperfections. Ultra-light extender makes epoxy or polyester resins lighter and more sandable. Great for joints and fillets, or surfacing over imperfections in wood grain or in fiberglass cloth. Convenient spout offers easy, no-waste pouring for clean,no mess use.
