Green Stuff is the name figure sculptors use for a soft, slightly rubbery two-part putty that is prized for exactly the properties a hard epoxy lacks. It stretches rather than crumbles, holds a thin edge without tearing, and cures flexible enough that a sculpted cape or cloak can be bent slightly without snapping off. Cloth, capes, hair and thin organic shapes are what it exists for.
Keep the tool and your fingers wet, because this type is stickier than hard epoxies, and work it in thin layers rather than one mass. A light-curing putty, which stays workable until you put a UV lamp on it, is a useful alternative when a session runs long. For a hard, drillable, sandable result choose from the harder grades in epoxy putty instead. Thin even strips and rolls are much quicker to produce with a roll maker, and shaping is easiest with silicone shapers.
