No. 1 Pottery Plaster sold in 1 pound increments. Image is of a 50lb bag (22.68KG).
No. 1 Pottery Plaster is the industry standard for making slip casting molds for ceramicware, sanitaryware, dinnerware, and fine china. With a dry set strength of 2000 PSI it produces break-resistant, smooth wearing molds for slip casting, jiggering, and press molds.
Mix 70 parts water to 100 parts plaster
For best results, sift dry plaster into a bucket of water, let sit to soak for 1-2 min and mix thoroughly for 1-2 min.
Vicat set time of 14-24 minutes
Store in a dry, stable environment