Mold Maker

Responsibilities:

• Build new extrusion blow molds (cavities, pinch-offs, neck rings, base inserts, and related tooling) from engineering drawings, blueprints, and CAD/CAM data
• Machine and fit mold components to tight tolerances, including split lines, parting surfaces, and cooling/venting features
• Fit and align pinch-off areas to ensure clean parison weld and proper part flash characteristics
• Perform mold repairs, modifications, and preventive maintenance, including pinch-off and cavity rework
• Operate other precision machine tools as needed
• Fit, assemble, and hand-finish mold components, including polishing, texturing, and engraving as needed
• Drill and fit cooling/water lines and venting to ensure proper mold performance and cycle times
• Troubleshoot mold issues during trial runs and production (e.g., parison distribution, pinch-off, venting, cooling) and make corrective adjustments
• Read and interpret complex engineering drawings, blueprints, and mold layouts
• Use precision measuring instruments (micrometers, calipers, height gauges, CMM, etc.) to verify part accuracy
• Maintain detailed and accurate records of mold builds, repairs, and modifications
• Follow all shop safety procedures and maintain a clean, organized work area
• Collaborate with engineers, designers, and other toolmakers to meet project timelines

Requirements:

• Minimum 5+ years of experience as a Mold maker or in a related precision toolmaking role; extrusion blow mold experience strongly preferred
• Strong knowledge of extrusion blow mold design, construction, and function
• Familiarity with pinch-offs, neck rings, cavities, base inserts, cooling/venting systems, and split-line fit
• Proficiency operating lathes and other toolroom machinery
• Ability to read and interpret complex blueprints, technical drawings, and CAD models
• Experience with mold trials, troubleshooting, and process adjustments preferred
• Strong mechanical aptitude and attention to detail
• Ability to work independently and manage multiple projects/deadlines

Education:

• High school diploma or equivalent required; formal toolmaking apprenticeship, trade school, or technical certification preferred

We offer attractive, competitive compensation and benefits including, medical, dental, 401k, short-term disability, AD&D, tuition reimbursement, and more. If you take pride in your work and are committed to personal and professional success, let's talk. Please visit to learn more.


Zobility is RGBSI's workforce management and staffing division. RGBSI is a multi-national corporation headquartered in Troy, MI with branches throughout the USA, Canada, Germany, and India.