1st Shift Sinker EDM Specialist
Dynamic Tool Corporation · Menomonee Falls, WI · United States · On-site
Posted Sep 3, 2026
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Job Type
Full-time
Description
MISSION & CORE VALUES:
At Dynamic Tool Corporation, it is our mission to inspire those around us through growth, quality, and innovation.
We successfully and continuously accomplish this mission through our core values:
Excellence – Giving nothing less than our best effort to every application
Integrity – Operating with respect and support for others
Safety – Ensuring our shared environment is clean, organized
Customer-Focus – Absolute accountability and proactive effort to ensure their success
Through adhering to the principles of our mission and consistently gauging our actions to our core values, it is our vision to become our customer’s first choice by leaving a lasting, positive impression on the industry.
JOB PROFILE SUMMARY:
The Sinker EDM Specialist is responsible for operating and maintaining sinker EDM (Electrical Discharge Machining) equipment to produce high-precision mold components. This role requires a deep understanding of EDM processes, electrode design, and fine-tolerance machining. The Sinker EDM Specialist plays a critical role in supporting the production of complex injection molds with tight dimensional and surface finish requirements.
ESSENTIAL JOB DUTIES:
The individual in this position must be able to successfully perform the job duties listed below.
Responsibilities:
Set up and operate sinker EDM machines to produce mold components to exact specifications.
Interpret blueprints, CAD models, and work instructions to determine machining requirements.
Design and fabricate electrodes using graphite or copper materials.
Monitor EDM operations and make adjustments to maintain accuracy and surface finish.
Inspect finished parts using precision measuring tools and ensure conformance to tolerances.
Perform routine maintenance and troubleshooting of EDM equipment.
Collaborate with toolmakers, CNC programmers, and engineers to optimize EDM strategies.
Maintain accurate records of setups, tooling, and job progress.
Requirements
QUALIFICATIONS:
Work Experience:
5+ or more years of related experience
Experience in sinker EDM operations, mold making, or precision machining.
Education:
Associate degree from a two-year college or technical school
Technical diploma or certification in mold making, machining, or EDM technology.
Proficiency in sinker EDM machine operation (e.g., Sodick, Makino, Mitsubishi)
Knowledge of electrode materials and design
Familiarity with precision measuring tools and inspection techniques
Understanding of mold design and steel types
PREFERRED QUALIFICATIONS:
Experience with Makino Sinkers a Plus
Strong attention to detail and craftsmanship
Ability to work independently and as part of a team
Experience with automated EDM cells and integrated metrology
Good communication and documentation skills
PHYSICAL DEMANDS:
Frequent standing, bending, and lifting (up to 50 lbs.)
Use of hand tools, measuring…