Profession · Full profile

Molding Machine Operator

Molding machine operators run equipment that shapes plastic and metal parts in manufacturing plants.

Average salary

$44,350

Salary range

$34,170 – $61,600

Training time

—

Job market

Decline

2/10

Work-life balance

Fair

5/10

Molding machine operators run equipment that shapes plastic and metal items. They load resin or metal, watch cycles, remove finished parts, and trim excess flash. Workers measure dimensions with gauges and check for defects before packing finished goods. Most plants operate around the clock, requiring shift work and full-time schedules. Pay and job figures cover molding, coremaking, and casting machine setters, operators, and tenders, metal and plastic, the official group that includes molding machine operators.

A workday

A day in the life

What does a workday really look like?

A standard morning shift focused on running continuous molding lines, conducting part inspections, and packing orders.

7:00 AM
Shift turnover and equipment check
Meet with the outgoing operator, review shift logs, and inspect machine operating temperatures.
7:30 AM
Material loading
Fill machine hoppers with plastic resin or metal stock to prepare for active production runs.
9:00 AM
Machine operation and cycle monitoring
Run molding cycles, adjust pressure settings, and observe part releases from the mold.
11:30 AM
Quality checks and dimensional measuring
Measure finished parts with calipers and inspect for surface warping, bubbles, or short shots.
12:30 PM
Scheduled meal break
Take a rest break away from the production floor.
1:00 PM
Trimming, packing, and labeling
Trim excess flash and runners from cooled components before packing parts into shipping cartons.
2:30 PM
Floor cleaning and production recording
Clean machine work areas, log scrap rates, and record final piece counts for the shift.

Task breakdown

An overnight shift maintaining automated machine cycles, performing quality control, and preparing equipment for mold changeovers.

11:00 PM
Shift briefing and workstation setup
Put on hearing protection and safety gear, review nighttime production quotas, and verify line assignments.
11:30 PM
Line startup and raw material replenishment
Load resin containers, verify nozzle temperatures, and initiate machine cycles.
1:30 AM
Part defect inspection
Check emerging parts with gauges to detect dimensional flaws and short shots.
3:30 AM
Scheduled break
Step away from machine noise to take a scheduled rest break.
4:00 AM
Trimming and bulk packing
Manually trim sprues and flash from cast parts and pack units according to packaging standards.
6:00 AM
Mold change assistance
Assist setup technicians with basic machine maintenance, cleaning, and tooling adjustments.
7:00 AM
Shift wrap-up and documentation
Enter completed production figures into the system and hand over the line to the day shift.

Salary data

What do you really earn?

Salary by experience, sector and region.

Minimum

$34,170

Average

$44,350

Maximum

$61,600

Salary by region

Region	Min	Avg.	Max
National	$34,170	$44,350	$61,600
Michigan	$34,630	$39,490	$59,770
Ohio	$35,700	$44,830	$61,860
Illinois	$36,090	$45,500	$61,950
California	$36,790	$47,240	$61,470
Indiana	$31,880	$44,290	$62,940

Typical benefits

Health insurance

Medical, dental, or vision coverage provided to plant employees.

Retirement plan with employer match

Company-supported retirement savings with matching contributions.

Shift differentials for nights and weekends

Increased hourly rates paid for working overnight, evening, or weekend shifts.

Paid overtime

Premium hourly pay earned when working extra hours beyond standard full-time shifts.

Pathways

Education pathways

Which paths lead to this profession?

Other

4 years

High school diploma or equivalent

Most employers prefer a high school diploma. Basic math and measuring skills are tested at some plants.

Entry requirements: None

On-the-job training

1 to 12 months

On-the-job training on molding machines

New operators learn machine controls, quality checks and safety from experienced staff. Learning to set up and change molds takes longer and leads to setter jobs.

Costs: Paid by the employer
Entry requirements: Hired as a machine tender or operator

Certificate

Several months to 1 year

Manufacturing or plastics technology certificate at a community college

Courses cover materials, machine operation, blueprints and quality control. A certificate helps when moving up to process technician.

Entry requirements: High school diploma or equivalent

Profile

Skills & personality

Is this a good fit for you?

Hard skills

Injection molding or die casting machine operationOperating machinery that melts, injects, and solidifies plastic or metal into parts.
Measuring with calipers and gaugesUsing precision measurement tools to confirm part dimensions match job specifications.
Visual quality inspectionIdentifying cosmetic and structural defects such as short shots, warping, and air bubbles.
Reading work instructions and blueprintsInterpreting written production orders, part diagrams, and standard processing guides.
Mold changes and setup supportAssisting setup personnel with mold positioning, line connections, and basic machine cleaning.
Machine safety and lockout proceduresFollowing plant safety rules, emergency shutoffs, and lockout practices around hot tooling.

Soft skills

Attention to detailCatching small imperfections and machine setting drifts before bad parts accumulate.
ReliabilityArriving on time for scheduled shifts to keep continuous factory lines running.
TeamworkWorking cooperatively with material handlers, setup technicians, and line leads.
StaminaRemaining productive during long shifts spent standing near warm, loud machines.

Is this a good fit for you?

✓
ObservantNotices minor part flaws and subtle changes in machine cycle speed or sound.
✓
DependableMaintains steady attendance to keep ongoing production schedules on track.
✓
MethodicalFollows operational checklists, safety measures, and quality inspection guidelines consistently.
✓
ResilientHandles the physical demands of long shifts, warm shop floors, and repetitive manual work.
✓
CooperativeCoordinates smoothly with floor technicians, supervisors, and fellow operators.

Market

Job market & outlook

What does the market look like?

Openings per year

13,800

Trend

Declining

Growth

-3.4%

AI impact

6/10

Robots already remove and stack parts on many molding lines, and vision systems check quality. Setup, troubleshooting and judging defects still need trained operators.

Regional demand

Indiana

Automotive suppliers and plastics processors drive steady manufacturing recruitment across the region.

10/10

Michigan

Automotive parts suppliers and plastics manufacturing plants maintain regular hiring for production operators.

10/10

Ohio

Foundries, die casting facilities, and plastic product plants support steady factory floor opportunities.

10/10

Illinois

Packaging manufacturers and diverse industrial operations seek operators for high-volume molding lines.

9/10

California

Medical device makers and specialized product companies employ operators on regulated manufacturing lines.

3/10

Growth

Career paths

Where can this profession take you?

Vertical growth

Machine tender or material handler
0-1 years
Handles raw resin and supplies materials to the line before learning operator controls.
Molding machine setter
2-4 years
Installs molds, connects lines, and sets machine parameters prior to production cycles.
Molding process technician
3-6 years
Troubleshoots processing defects and optimizes cycle speeds, pressures, and temperatures.
Production supervisor
5+ years
Oversees plant floor staff, daily schedules, and overall output targets across shifts.

Horizontal move

CNC operator
Applies machining knowledge to run computer numerical control metalworking or shaping equipment.
Packaging machine operator
Runs packaging systems that bag, box, and wrap finished products for transport.
View Packaging Machine Operator
Quality inspector
Focuses on verifying part specifications and preventing defective lots from leaving the facility.
View Quality Inspector

Good to know

Practical info

Working hours: Most molding machine operators work full time, and overtime is common when orders are high. Plants frequently run around the clock with evening, night, and weekend shifts.
Remote work: Remote work is not possible because operators run machines on the production floor.
Physical requirements: Operators stand for long shifts near hot, noisy machines, do repetitive tasks and lift parts and material bags, and wear safety glasses, gloves and hearing protection.
Typical employers: Plastic products manufacturers, automotive parts suppliers, foundries and die casting plants, medical device makers, packaging manufacturers.
Professional associations: Plastics Industry Association, Society of Plastics Engineers.

FAQ

Frequently asked questions

What does a molding machine operator do daily?

Molding machine operators run equipment that shapes plastic or metal into finished parts. They load raw materials into machine hoppers, adjust temperature and pressure settings, and monitor production cycles. When cycles finish, operators remove parts, trim excess flash or runners, inspect components with gauges, pack goods, and record scrap totals on the shop floor.

Can molding machine operators work remotely?

Molding machine operators cannot work remotely under any circumstances. Their daily tasks involve feeding raw plastic or metal into factory machines, visually inspecting parts as they come off the line, and performing routine cleaning. Because these duties require hands-on physical contact with heavy production machinery, operators must work directly on the factory floor.

What shifts do molding machine operators typically work?

Molding machine operators frequently work evening, night, and weekend shifts, as well as rotating schedules. Many manufacturing facilities operate around the clock to meet product quotas. Most operators work full time, and overtime is common during periods of high order volume, though shift hours generally remain predictable once assigned.

What education do you need to become a molding machine operator?

You do not need a college degree to become a molding machine operator. Most employers prefer a high school diploma or equivalent, and basic math or measuring skills are tested at some plants. Operators learn their trade through on-the-job training lasting from 1 to 12 months under experienced staff.

What are the physical requirements of this job?

Operators must be able to stand for long shifts near warm, noisy machines and perform repetitive manual motions. The role requires lifting finished parts and material bags throughout the workday. Workers must also wear required personal protective equipment, including safety glasses, protective gloves, and hearing protection, to stay safe on the floor.

How is automation changing the molding machine operator role?

Robots already remove and stack parts on many molding lines, and automated vision systems inspect parts for quality defects. However, facilities still need trained operators to set up machines, troubleshoot operational issues, and evaluate complex defects. Automation handles routine repetitive part movement while human workers handle technical setup and oversight.

What industries hire molding machine operators?

Molding machine operators work across several manufacturing sectors, including plastic products manufacturing, automotive parts supply, foundries, and die casting plants. In addition, medical device makers and packaging manufacturers employ operators to run precision molding machinery for healthcare components, consumer containers, and protective packaging materials.

Related professions

In depth

All about molding machine operator

The background, context and details.

Day to day work on the plant floor

Operators run specialized production machinery. While operating active equipment across the production floor, workers load raw plastic resin or molten metal into designated molding machines and watch cycle settings to keep parts within required specifications. Plants move fast. Workers remove finished parts and trim away excess material like flash and runners. Using calipers and gauges, workers inspect parts for defects such as short shots, warping, bubbles or wrong dimensions. Scrap counts are logged. They pack finished parts and label shipping boxes while recording scrap and helping setup technicians change molds.

Plant conditions and rotating shifts

The environment is loud. Operators stand for long shifts near hot machines. They do repetitive physical tasks and lift parts and material bags. Workers wear required protective gear including safety glasses, gloves and hearing protection. Plants run constantly. Because many manufacturing plants operate around the clock to meet customer delivery goals, operators frequently work full time with rotating night shifts and log paid overtime when production volume spikes. Overtime is common.

Manufacturing facilities that hire operators

Operators find employment across several manufacturing sectors:

Plastic products manufacturers
Automotive parts suppliers
Foundries and die casting plants
Medical device makers
Packaging manufacturers

Training and required qualifications

Most employers prefer a high school diploma. Some plants test basic math and measuring skills during hiring. Training happens on site. During on-the-job training on molding machines lasting from 1 to 12 months, new hires learn machine controls, routine maintenance, part cleaning and lockout safety from experienced staff. Employers provide forklift operator certification when the job includes driving a forklift, as required by OSHA. Some operators complete a manufacturing or plastics technology certificate at a community college over several months to 1 year.

Career advancement opportunities

Experience creates clear paths upward. Operators who start as machine tenders can advance to molding machine setters once they master mold changes and machine adjustments. With additional technical experience on the floor, operators can advance to molding process technician or production supervisor, or transition into related work as a quality inspector. Contact local manufacturing plants to apply for an entry-level operator role.