Slip Cast
NJK
White Earthenware
Firing Temp: 1060°-1160°
Drying Shrinkage (Linear): +-5.2%
Firing Shrinkage (Linear): +-10.5%
NJ Stoneware
White Stoneware
Firing Temp: 1100°-1240°
Drying Shrinkage (Linear): +-4.1%
Firing Shrinkage (Linear): +-10%
NTC Slip
Terracotta Earthenware
Firing Temp: 1060°-1100°
Drying Shrinkage (Linear): +-5%
Firing Shrinkage (Linear): +-10.2%
Bisque temperatures: 1020° = Earthenware & 1060° = Stoneware
How to mix your own ceramic casting slip
Step 1: Place 16l of water in a large container
Step 2: Add 130ml of deflocculant (Alcosperse/Sodium Silicate) - if you dont have any, we have you covered!
Step 3: Stir to ensure it is properly mixed
Step 4: Now add the 40kg bag of Slip Powder
Step 5: Test the density. If density if below 1.7 (add more clay). If density is over 1.75 (add more water).
Step 6: Leave to mature overnight. NB: Strain before use!
What about other clays
Ndebele Mining has a history of making custom-made clays for various applications, whether for industrial ceramic production, pottery, or artists.
