Excalibur is a ultra-fine gypsum based molding material originally created for the dental industry but they have asked we also provide it for hobbyist. Excalibur has an expansion rate of .09% and 18,000 psi compressive strength. Excalibur pours thinner than plaster and will not need vibration to settle into molds. This hold fine detail extremely well and has a high surface abrasion resistance to prevent nicks and dings to your products. Details are crisp and virtually bubble free.

Selecting Mixed Colors?

If you are selecting a Mixed color option.
Please enter the quantities of each color below in 5 pound increments, before adding to cart.

Additional information

Weight N/A
Dimensions 12.5 × 12.5 × 6 in

5 lbs, 10 lbs, 15 lbs, 20 lbs, 25 lbs, 30 lbs, 35 lbs, 40 lbs, 45 lbs, 50 lbs


White, Gray, Blue, Green, Violet, Tan, Mixed