Job Description. Job Description. PLASTIC INJECTION MOLD OPERATOR - 2nd SHIFT. 18.50 / hour. Must be able to train on 1st shift at regular day rate of $16, then move to 2nd shift with $2.50 shift differential at $18.50 / hour. Summary of duties and responsibilities. Operate injection molding machines to produce ceramic cores. Ensure products meet all quality specifications and are made according to the latest standard operating procedure. Essenti...