In the Warm Box process the core box is warm when the core sand is introduced. The warmth of the core box initiates curing but does not complete it. The cores finish curing outside the core box and sometimes in a separate dryer. This process allows for faster core production cycles than the Shell Box process. The operating temperature in Warm Box is lower, which can extend the life of the tooling. Warm Box cores have excellent hot and cold tensile strengths.