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Moisture is what holds a green sand mold together, and missing the right amount in either direction causes defects. Too

Aero Metals, American Casting Company, AMT, Barron Industries, Eagle Alloy, Fisher Cast Steel, MetalTek International, Milwaukee Precision Casting, Northern Stainless

Draft angle in sand casting is the taper given to every pattern wall that runs perpendicular to the parting line,

Sand casting patterns are made from wood, plastic (polyurethane board or castable epoxy and urethane), metal (aluminum or cast iron),

Subsurface pinholes in ductile iron castings are prevented by limiting the hydrogen and nitrogen that reach the metal at the

The gating system in sand casting is the set of channels molded into the sand that carries molten metal from

Choose a chemical binder by the casting first (the metal you pour, the size of the part, and whether the

Look for a foundry that pours ductile iron as its main metal, controls magnesium treatment and inoculation on every ladle,

Most cast iron parts belong in a sand mold: green sand for long runs of parts under a few hundred

Casting sand is recycled inside the foundry: the same sand is cleaned, cooled, topped up with new sand and binder

The difference is water: a green sand mold is poured moist, and a dry sand mold is the same clay-bonded