In this tutorial, Milo shows how to cast resin duplicates of wooden models using Smooth-Cast™ 320 resin and URE-FIL™ 5 filler. Adding the filler to the resin gives the final casting a very realistic wooden look. The Smooth-Cast™ 320 Series resins readily accept pigments and fillers (such as URE-FIL™ 3, 5 and 7 from Smooth-On). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents.