Three-dimensionally printed core box blank

Abstract

A method of manufacturing a cold box core includes injecting unbonded sand into a cold box core tool, the unbonded sand including sand mixed with a resin, the cold box core tool including: a first platen; a first insert half secured to the first platen; a second platen; and a second insert half secured to the second platen and configured to alternately mate with and separate from the first insert half, each of the first insert half and the second insert half being three-dimensionally printed from a polymer material, the first insert half and the second insert half together forming a cavity therebetween defining an outer geometric shape of the cold box core; and injecting gas into the unbonded sand to harden the cold box core.

Dependencies are inferred from the claim text.