How to make "Greensand" for sand casting at home ...
The following are the ingredients needed to make it for green sand casting: 1. Silica, chromite, zircon sand or graphite; 2. bentonite clay, 5-11% is required. 3. 2% to 4% water; 4. 3% to 5% inert sludge; 5. 0% to 1 % anthracite; For a sample home project, green sand is made by starting with 1KG of fine sand, then add 120g of bentonite clay first.
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