Precision Sinker EDM Machinist

AJ Tool LLC

Village of Richfield (WI)

On-site

USD 65,000 - 90,000

Full time

14 days+

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Job summary

AJ Tool LLC in Richfield, WI is seeking a Sinker EDM Specialist to operate and maintain sinker EDM equipment for high-precision mold components. This role requires deep EDM process knowledge, electrode design, and fine-tolerance machining.

The position involves collaborating with toolmakers, CNC programmers, and engineers to optimize EDM strategies, with responsibilities spanning setup, blueprint interpretation, electrode fabrication, monitoring, inspection, and documentation.

Qualifications

5+ years in sinker EDM operations, mold making or precision machining.
Associate degree from a two-year college or technical school.
Technical diploma or certification in mold making, machining, or EDM technology preferred.

Responsibilities

Set up and operate sinker EDM machines 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 adjust for accuracy and surface finish.
Inspect finished parts with precision measuring tools to ensure tolerances.
Perform routine maintenance and troubleshoot EDM equipment.
Collaborate with toolmakers, CNC programmers, and engineers to optimize EDM strategies.
Maintain accurate records of setups, tooling, and job progress.