Demo

Plastic Injection Mold Builder

Mayer Tool & Engineering, Inc.
Sturgis, MI Full Time
POSTED ON 11/27/2025
AVAILABLE BEFORE 12/27/2025
Benefits:

  • Air-Conditioned Facility
  • Family Owned Business
  • 401(k)
  • 401(k) matching
  • Dental insurance
  • Health insurance
  • Opportunity for advancement
  • Paid time off
  • Vision insurance


Job Summary:

We are seeking a skilled and detail-oriented Plastic Injection Mold Builder to join our team. In this role, you will be responsible for designing, building, assembling, and maintaining plastic injection molds used in the production of high-quality, high-volume, plastic parts. The ideal candidate will have a strong background in mold building, a keen eye for detail, and a passion for working with cutting-edge manufacturing technologies.

Key Responsibilities:

  • Mold Construction: Build, assemble, and maintain plastic injection molds, ensuring they meet quality standards and specifications.
  • Blueprint Interpretation: Read and interpret engineering drawings, blueprints, and CAD models to fabricate molds and components.
  • Precision Machining: Use precision equipment such as CNC machines, lathes, grinders, and EDM (Electrical Discharge Machining) to shape mold components to exact specifications.
  • Mold Repair and Maintenance: Perform routine inspections, maintenance, and repairs on molds to ensure continued high-performance functionality and longevity.
  • Testing and Troubleshooting: Conduct tests on molds to check for defects and make adjustments as necessary. Troubleshoot mold-related issues during the manufacturing process.
  • Collaboration: Work closely with engineering, production, and quality control teams to ensure molds are built to specifications and meet production deadlines.
  • Safety and Cleanliness: Maintain a clean, safe, and organized work environment, following all safety protocols and maintaining equipment.
  • Documentation: Keep accurate records of mold designs, repairs, and maintenance for future reference.
  • Continuous Improvement: Stay updated on new mold-building techniques, tools, and technologies to continually improve efficiency and mold quality.


Qualifications:

  • High school diploma or equivalent required; technical certification or apprenticeship in mold building, machining, or a related field preferred.
  • Must be knowledgeable with using precise measuring equipment such as calipers, micrometers, play-checks, height gauges, etc.
  • 3 years of experience in plastic injection mold building or a similar manufacturing environment.
  • Strong proficiency in reading and interpreting technical drawings, blueprints, and CAD software.
  • Experience with CNC machining, lathes, mills, EDM, and other precision tools.
  • Excellent problem-solving skills and attention to detail.
  • Ability to work independently and as part of a team.
  • Strong communication skills, both verbal and written.
  • Ability to lift heavy materials and work in a physically demanding environment.


Preferred Skills:

  • Experience with mold design software (such as Cimatron, SolidWorks, Mastercam, or similar).
  • Familiar with of plastic materials and injection molding processes.
  • Experience in troubleshooting complex molding issues and optimizing designs.


Physical Requirements:

  • Ability to stand, sit, and work with hands for long periods.
  • Ability to lift up to 50 pounds.
  • Ability to work in a workshop environment with various machinery and tools.


Why Join Us:

  • Competitive wage and benefits package.
  • Opportunity for career growth and skill development.
  • Collaborative and supportive team environment.
  • Work with state-of-the-art equipment and technologies in the plastic injection molding industry.


If you are passionate about mold building and have the technical skills to thrive in a fast-paced manufacturing environment, we encourage you to apply and join our team!

Salary.com Estimation for Plastic Injection Mold Builder in Sturgis, MI
$46,708 to $59,412
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