Careers

CAREERS

Mol-Son LLC is a premier tight tolerance plastic injection mold builder located in Mattawan, Michigan.

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Career Interest

Mol-Son may have a position for you. We’re always on the lookout for talented individuals who share our dedication for providing excellence in their work, including mold design, build, repair, or CNC. If you’re already experienced in any of these positions and share a passion for quality teamwork, attention to detail, and continuously improving in your craft, we encourage you to apply.

POSITIONS

Duties/Responsibilities

  • Evaluate Tool Maintenance Request (TMR)
  • Perform required repair and/or maintenance
  • Ensure spare mold components are fit properly
  • Inform management of delay to expected delivery dates
  • Safety & housekeeping

 


Knowledge

  • Blueprint reading
  • General mold design, build & function
  • Injection molding knowledge
  • Mechanical aptitude
  • Tool room equipment & machining processes
  • Use of hand held measurement tools
Apply Now

Duties/Responsibilities

  • Review tool design (model, drawings)
  • Identify areas for improved construction & ease of machining
  • Inform other departments of projects needs (EDM, CNC, polish, etc.)
  • Communicate with management, support needed to meet delivery date (mold makers, apprentices, etc.)
  • Assure all mold components are received before final assembly
  • Train apprentices
  • Verify accuracy & quality of work done by others under your supervision
  • Safety & housekeeping

Knowledge

  • Blue print reading
  • CAD/CAM software & programming
  • General mold design, build & function
  • Injection molding knowledge
  • Mechanical aptitude
  • Tool building materials (steels, heat treat, plating, etc.)
  • Tool room equipment & machining processes
  • Use of hand held measurement tools
Apply Now

Description

We’re looking for a skilled CNC EDM Sinker Specialist to join our Tool Room Team.  In this role, you’ll program, set-up, and operate CNC EDM equipment to manufacture precision tooling and mold components that support high quality, efficient production.

What you will receive:

  • Competitive wages based on experience
  • Flexible schedule
  • Paid Time Off and Paid holidays
  • Excellent medical insurance
  • 401k with company contribution
  • Dental and vision coverage
  • Paid life insurance, short-term and long-term disability
  • Employee Assistance Program

What you will do:

  • Program, set-up, and operate CNC sinker EDM machines.
  • Manufacture precision tooling, mold components, and fixtures to engineering specifications.
  • Read and interpret blueprints, CAD models, and engineering drawings.
  • Diagnose machining and programming issues and implement effective solutions.
  • Inspect completed components using precision measuring equipment to ensure dimensional
  • Perform routine machine maintenance and maintain a clean, organized work area.
  • Perform other related duties as assigned.

Qualifications

Required Knowledge & Skills

  • Experience in programming and operating CNC EDM equipment (sinker EDM).
  • Strong knowledge of tooling, machining practices, and precision manufacturing.
  • Ability to read blue prints and work to close tolerances.
  • Experience with CAD/CAM software and precision measuring instruments.
  • Knowledge of injection molding process and tooling requirements.
  • Strong mechanical aptitude with problem solving ability.
  • A team-oriented mindset with strong communication skills.
  • High attention to detail and strong commitment to quality work.
  • Strong communication skills with the ability to work collaboratively.
  • Well-organized and self-motivated with the ability to manage tasks independently.

 

Education and Experience Requirements

  • Highschool diploma or equivalent
  • Experience operating CNC EDM equipment.
Apply Now

Duties/Responsibilities

  • Critique product designs for mold build (DFM review)
  • Assure proper draft, shrink and tolerance sizing are incorporated into mold design
  • Assure design meets customer expectations& standards
  • Perform CAE analysis as required
  • Provide 2-D and 3-D mold designs to build injection mold tooling to shop
  • Specify material & components

 

Knowledge

  • CAD/CAM knowledge
  • CAE knowledge (mold flow analysis)
  • Drafting, drawing, & general design standards
  • Injection molding processes
  • Mechanical aptitude
  • Plastics used in product designs
  • Tool build materials & operations (heat treating, plating)
  • Self Motivated
  • Tool room equipment & machining processes
Apply Now

Duties/Responsibilities

  • Set-up/Operate CNC EDM equipment
  • Program CNC EDM controls
  • Evaluate electrode construction with mold maker for most effective use of equipment
  • Check & measure work performed
  • Monitor equipment maintenance
  • Safety & housekeeping

Knowledge

  • Blue print reading
  • CAD/CAM software & programming
  • Mechanical aptitude
  • Set-up & Operate CNC EDM
  • Tool building materials (steels, graphite, Al, Cu, etc.)
  • Tool room equipment & machining processes
  • Use of hand held measurement tools
Apply Now

Duties/Responsibilities

  • Set-up/operate CNC Mill equipment
  • Program CNC Mill control
  • Program with off-line CAM software
  • Evaluate milling process with mold maker and/or EDM operators for most effective use of equipment
  • Check & measure work performed
  • Monitor equipment maintenance
  • Safety & housekeeping

Knowledge

  • Blue print reading
  • CAD/CAM software & programming
  • Mechanical aptitude
  • Set-up & operate CNC Mill
  • Tool building materials (steels, graphite, Al, Cu, etc.)
  • Tool room equipment & machining processes
  • Use of hand held measurement tools
Apply Now

Duties/Responsibilities

  • Set-up/operate Wire EDM equipment
  • Program Wire EDM machine controls
  • Program with off-ling CAM software
  • Design & discuss with mold makers, insert bars & fixturing for machine effectiveness
  • Check & measure work performed
  • Monitor equipment maintenance
  • Safety & housekeeping

 

Knowledge

  • Blueprint reading
  • CAD/CAM software & programming
  • Mechanical aptitude
  • Set-up & operate Wire EDM
  • Tool building materials (steels, graphite, AI, Cu, etc.)
  • Tool room equipment & machining processes
  • Self-motivated
  • Use of hand held measurement tools
Apply Now

Position Description: Join our Tool Room team as a Mold Polisher, where your precision and craftsmanship help produce high-quality tooling. In this hands-on role, you will inspect, polish, and finish mold cavities, cores, and tooling components to exact specifications, ensuring optimal mold performance and exceptional part quality.  Working closely with Mold Makers, this position ensures tooling meets quality standards by inspecting for defects, understanding critical mold features, and producing precision finishes that support optimal mold performance and part quality. The Mold Polisher also maintains polishing equipment and supplies while promoting a safe, clean, and organized work environment.

Responsibilities:

  • Inspect mold cavities, cores, and tooling components for defects, imperfections, or damage prior to polishing.
  • Review each job with the assigned Mold Maker to understand critical surfaces, finish requirements, and areas requiring special attention.
  • Polish mold cavities, cores, inserts, and other tooling components to specified surface finish requirements using appropriate polishing techniques and equipment.
  • Verify that finished surfaces meet quality expectations and report any concerns or abnormalities to the Mold Maker or Supervisor.
  • Order, organize, and maintain polishing supplies, compounds, abrasives, and equipment to ensure availability and proper condition.
  • Perform routine care and maintenance of polishing equipment.
  • Follow all company safety policies and procedures, including the proper use of personal protective equipment (PPE).
  • Work collaboratively with Mold Makers and other team members to support tooling repairs, maintenance, and production priorities.
  • Maintain a safe, organized, and professional work environment.
  • Perform additional duties as need to support business operations and customer satisfaction.

Qualifications

Required Education/Skills/Abilities:

  • Highschool diploma or equivalent
  • Previous polishing, machining, manufacturing, or tool room experience is preferred.
  • Basic knowledge of polishing abrasives, stones, rotary cutters, mounted points, and related polishing materials; familiarity with benching tools such as hand grinders, files, and similar equipment.
  • Ability to safely operate all required polishing equipment, including ultrasonic polishers/profilers and related equipment.
  • A team-oriented mindset with strong communication skills.
  • High attention to detail and strong commitment to quality work.
  • Strong communication skills with the ability to work collaboratively.
Apply Now

Overview

Mol-Son’s apprenticeship program has successfully produced over 40 skilled Toolmakers, Specialty Operators, and Mold Makers. We are proud to partner with Tooling U-SME, a nationally accredited educational organization that offers a comprehensive four-year program.

This program combines online classroom education with hands-on training and real-world job experience, ensuring our apprentices are fully prepared to meet industry demands.

Apply Now

How to Apply

  1. Download the Employment Application Form
  2. Complete the application (digital or by hand and scan it).
  3. Return here and upload your completed application along with the required documents.