Master Mache is concentrated, safe and non-hazardous with no asbestos, ready for use with the addition of water. Set time neat is 2 hours. Full cure time is 1-4 days when moisture dries off. Master Mache is very strong and versatile. It has a grey body. Master Mache can be used with fillers 10% - 50% by volume, including plaster, chopped paper, gravel, dirt, sawdust, sand, cork, fibers & more.