New

3rd Shift - Molding Operator Assistant

Staffing Support Specialists

United States, Wisconsin, Menomonee Falls

May 08, 2026

Job Description

Molding Operator Assistant

1. JOB SUMMARY

Under the direction of the Molding Set-Up Operator , operate and maintain compression injection molding machine s and several deburring operation machines such as a wheelabrator , degater , and tumbler. Ope rate and maintain molding presses proper temperatures, cycle time, and vacuum units. Assist with removal and installation of molds from presses and load parts into the appropriate deburring machine operation. Check molded parts for dimension, finish, and remove flash.

2 . DUTIES AND RESPONSIBILITIES

Assist the Molding Set-Up Technician on the molding presses to perform standardized work by running presses and maintaining proper temperatures and set cycle times for molding.
Setups are made and maintained by technicians, but operator assistants will be expected to learn how to start up presses and learn the more advanced duties over time.
Must be capable of recognizing defective materials, parts, and machine malfunctions.
Keep molds clean and vents open; fiber brush molds on an hourly basis.
Load and operate wheelabrator/tumbler to remove flash/scale from parts for specified finish.
Carefully perform uniform cleaning that is necessary for molders to operate properly, avoiding damage to or breakage of parts.
Assist lapping operation by processing parts for lapping process & vision system inspection.
If parts require degating, load parts in the degater hopper and adjust abrasive and cycling time to suit cleaning requirements.
Generally close tolerance work where dimensional and surface finish requirements are not difficult to maintain due to machine setups of cycling time and feed of abrasive.
Will operate and maintain all machinery according to training instructions and will also be responsible for the inspection of product.

3. MINIMUM LEVEL OF EDUCATION/TRAINING REQUIRED :

GED preferred

4. MINIMUM EXPERIENCE REQUIRED TO PROFICIENTLY PERFORM THE JOB DUTIES:

Requires a fundamental knowledge of machine shop operations as acquired by short job training and experience.
2+ years machine operation experience

6 . PHYSICAL DEMANDS

	Amount of Time
None	Up to 1/3 of the time	1/3 to 2/3 of the time	2/3 or more
Stand			x
Walk		x
Sit	x
Use hands to finger, handle or touch				x
Reach above shoulders		x
Climb or balance	x
Stoop, kneel, crouch or crawl		x
Talk or hear		x
Taste or smell	x
Use foot/feet to operate machine	x

	Amount of Time
None	Up to 1/3 of the time	1/3 to 2/3 of the time	2/3 or more
Up to 10 pounds			x
Up to 25 pounds		x
Up to 50 pounds		x
Up to 100 pounds	x
More than 100 pounds	x

7 . TOOLS/EQUIPMENT USED:

	Amount of Time
Up to 1/3 of the time	1/3 to 2/3 of the time	2/3 or more
Metric allen wrenches		x
American allen wrenches		x
Misc. hand tools		x
Crane		x
Fiber Brush			x
Brass flat			x
Calipers or measuring devices	x

8. WORK ENVIRONMENT

Qu iet (Example: office)

Moderate Noise (Examples: lower decibel levels from machines)

x Loud Noise (Examples: normal shop conditions but under 85 decibels )

Very Loud Noise (Exam ples: 85 decibels or more)

How much exposure to the following environmental conditions does this job require? Show the amount of time by checking the appropriate boxes below.

	Amount of Time
None	Up to 1/3 of the time	1/3 to 2/3 of the time	2/3 or more
Wet, humid conditions (non-weather)		x
Work near moving mechanical parts				x
Work in high, precarious places	x
Fumes or airborne particles			x
Toxic or caustic chemicals		x
Outdoor weather conditions	x
Extreme cold (non- weather)	x
Extreme heat (non-weather)	x
Risk of electrical shock		x
Vibration		x
Work/job related travel	x

9. PROTECTIVE CLOTHING/EQUIPMENT REQUIRED.

Safety glasses required , Non-slip work shoe (steel toes not required).

E ar plugs are not required but available .