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Production

Molding, Coremaking, and Casting Machine Setters, Operators, and Tenders, Metal and Plastic

Also called: Core Machine Operator, Die Cast Technician, Diecast Machine Operator, Machine Operator

US median pay

$44,350

per year, 2025

Job growth 2025–35

-3.4%

declining

Openings a year (US)

13,800

150,000 employed

Typical entry education

High school diploma or equivalent

Preparation 2/5 · Some preparation

What this job is

Set up, operate, or tend metal or plastic molding, casting, or coremaking machines to mold or cast metal or thermoplastic parts or products.

What they do day to day

  • Measure and visually inspect products for surface and dimension defects to ensure conformance to specifications, using precision measuring instruments.
  • Observe continuous operation of automatic machines to ensure that products meet specifications and to detect jams or malfunctions, making adjustments as necessary.
  • Set up, operate, or tend metal or plastic molding, casting, or coremaking machines to mold or cast metal or thermoplastic parts or products.
  • Turn valves and dials of machines to regulate pressure, temperature, and speed and feed rates, and to set cycle times.
  • Read specifications, blueprints, and work orders to determine setups, temperatures, and time settings required to mold, form, or cast plastic materials, as well as to plan production sequences.
  • Observe meters and gauges to verify and record temperatures, pressures, and press-cycle times.
  • Connect water hoses to cooling systems of dies, using hand tools.
  • Remove parts, such as dies, from machines after production runs are finished.
  • Perform maintenance work such as cleaning and oiling machines.
  • Smooth and clean inner surfaces of molds, using brushes, scrapers, air hoses, or grinding wheels, and fill imperfections with refractory material.

Skills and knowledge that matter most

Skills

  • Operations Monitoring3.4/5
  • Operation and Control3.1/5
  • Time Management3.0/5
  • Quality Control Analysis3.0/5
  • Troubleshooting2.9/5
  • Social Perceptiveness2.9/5
  • Repairing2.9/5
  • Judgment and Decision Making2.8/5

Knowledge

  • Production and Processing3.5/5
  • Mechanical3.5/5
  • Mathematics3.1/5
  • English Language2.9/5
  • Administration and Management2.5/5
  • Physics2.5/5

Importance rated by people working in the job (1 = not important, 5 = extremely important).

Education and preparation

Preparation level 2 of 5 — Some preparation. Usually a high school diploma; some previous work experience or training helps.

Typical entry education (BLS): High school diploma or equivalent.

Highest education of people in this job:

  • High school diploma57%
  • Less than high school30%
  • Post-secondary certificate11%

Who this job suits

Mostly Realistic

Hands-on work with tools, machines, plants or animals

Conventional

Organising data, details and procedures

Based on the Holland (RIASEC) interest profile for this occupation.

Job titles you'll see in postings

Core Machine OperatorDie Cast TechnicianDiecast Machine OperatorMachine OperatorMold SetterMold TechnicianMolderProcess TechnicianProduction Technician