SURE CAST
Clay Planet's custom Dry Casting Slip Formula.
Sold dry by the 50 lb sack.
MIXING INSTRUCTIONS
For every 50 lb sack:
Mix with 2.5 gallons water
2 oz Sodium Silicate
1/2 oz Soda Ash (Sodium Carbonate)
Mix well - 3 hours, Let sit overnight, remix, and test specific gravity.
Take a gravity reading. 1.75 is your target. Anything between 1.7 and 1.8 is considered within a normal casting range.