After welding and cooling, which procedure is specified for the mold interior?

• A. Recondition the exterior surface by sanding.
• B. Remove all lubricant from the interior surface.
• C. Clean the inside of the mold with a soft bristle brush or soft cotton cloth.
• D. Reset the mold temperature sensor.

Answer: (C)

After welding and cooling, the inside of the mold should be cleaned to remove residues that could affect the next cycle. Using a soft bristle brush or a soft cotton cloth gently wipes away oil, debris, and scale without scratching or altering the mold’s finished interior surface. Sanding the interior would damage the surface finish and dimensions, so it isn’t appropriate. Removing all lubricant could leave the mold too dry and increase wear or cause sticking in future cycles. Resetting the mold temperature sensor isn’t about cleaning. This gentle interior cleaning best prepares the mold for the next use.