Shell Ingredients
For my hardshell I am using used dryer sheets dripped in a hydrocal and baking powder mixture. (2C of Hydrocal and 1 1/3 tsp of Baking Powder). The baking powder acts as a retarder of the hydrocal, giving a slightly longer use time before it sets up. I was able to get fully through the 2C of mixture before it would fully setup.
