Fine, super-clean Port Orford Cedar sawdust, 30-mesh grade. Used as an ingredient in "ground goop", along with filtered dirt, PVA, and acrylic paint in equal proportions. This makes a filler paste good to 1/4" thick, similar to, but finer than, Celluclay. Great for filling holes and cracks in scenery, or the surface on a scale mountain of sawdust to go with a lumbermill scene.