After completing the weld and allowing the mold to cool, what action is taken?

• A. Clean the inside of the mold with a soft bristle brush or soft cotton cloth.
• B. Apply mold release spray to the exterior.
• C. Reheat the mold to resume the process.
• D. Seal the mold for storage.

Answer: (A)

After the weld is finished and the mold has cooled, cleaning the interior is essential. The soft bristle brush or soft cotton cloth gently removes slag, oxide, and any weld residue from the inside surface without scratching or damaging the mold. A clean, smooth interior helps ensure the next casting or weld has accurate dimensions and a good surface finish, and it reduces the risk of defects caused by contaminants. Abrasive tools or harsher treatments could gouge or dull the mold, leading to poor tolerances or finish. Reheating, sealing for storage, or applying exterior mold release aren’t the immediate step required to prepare the mold for the next cycle.