Post-cooldown, which task is performed to the mold interior?

• A. Apply a fresh release agent to the interior.
• B. Clean the inside of the mold with a soft bristle brush or soft cotton cloth.
• C. Re-torque the mold bolts.
• D. Refill the coolant reservoir.

Answer: (B)

Cleaning the mold interior after cooldown is important to remove any release-agent residue and debris that can affect part release and surface finish. Using a soft bristle brush or a soft cotton cloth lets you gently wipe away buildup without scratching the mold surface, keeping the cavity smooth for the next cycle. This step directly prepares the mold for its next run and helps maintain consistent part quality. Other tasks aren’t performed inside the mold after cooldown: applying a fresh release agent is done before molding or during setup, not after cooldown; re-torquing bolts is a separate maintenance check; and refilling the coolant reservoir relates to the cooling system rather than cleaning the mold interior.