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1. Sand molds often use resin based chemical binders that possess high dimensional accuracy and high hardness.
2. Such resin-bonded sand molds take somewhat longer to manufacture than green sand molds because a curing reaction must take place for the binder to become effective and allow formation of the mold.
3. As in clay-bonded molds, the sand can often be recycled, although with some treatment to remove the resin.
