Brown and scratch coat fibers require fiber reinforcement to resist cracking in tension. Historically animal hair or bast (plant) fibers were used depending on what was readily available. The material properties of hemp fiber made it an excellent fiber for plaster reinforcement as documented in reference material from the period. Hemp fiber of high grade, processed and cut to appropriate length, is now available from US Heritage Group. Technical Datasheets are coming soon! Meanwhile we encourage you to contact us for project-specific technical advice, product selection or to place an order. Weight: 10 lbs