CNC Machinist/Programmer
Department: Polmold
Reports To: General Manager of Polmold
Location: PTI Tech, Clifton, NJ
Date: 12/29/2025
Summary:
The CNC Machinist/Programmer is responsible for programming, setting up, and operating high-precision CNC milling equipment to manufacture close-tolerance components for injection molds. This role involves creating and optimizing CNC programs, producing high-quality parts in hardened tool steels and graphite, and supporting the Polmold Tool Room in mold manufacturing and repair. Mold-making experience is preferred, and training is available for the right candidate.
Essential Functions:
- Program complex 3-axis tool paths using Mastercam for mold components and electrodes.
- Utilize SolidWorks to interpret models, prepare geometry, and support programming requirements.
- Set up and operate CNC mills, including:
- Mikron Mill S 500
- Haas VM2
- Perform hard milling and high-speed machining operations on hardened tool steels with close-tolerance requirements.
- Manufacture precision graphite electrodes for EDM processes.
- Inspect finished components using precision measurement tools to verify dimensional accuracy and quality.
- Maintain proper tooling, fixtures, machine cleanliness, and work area organization.
- Collaborate with Mold Makers and Engineers to ensure part accuracy, manufacturability, and process efficiency.
- Follow all company and OSHA safety policies and contribute to a safe working environment.
Required Experience and Qualifications:
- Proficiency in Mastercam for CNC programming.
- Ability to read and interpret 3D CAD files; SolidWorks experience strongly preferred.
- Hands-on experience setting up and running CNC milling machines.
- Understanding of machining principles, cutting tools, speeds/feeds, and high-precision finishing.
- Strong attention to detail and ability to produce parts to tight tolerances.
- Ability to lift, push, pull, or carry 40 lbs or more.
Preferred Qualifications:
- Experience running Mikron Mill S 500 and/or Haas VM2.
- Background in hard milling or high-speed machining.
- Experience in machining hardened tool steels and graphite electrodes.
- Exposure to mold making, mold components, or Tool Room environments.
- Ability to work independently on complex setups and multi-operation parts.
Note: We are willing to train a motivated individual with strong machining aptitude and foundational CNC experience.
Contact to Apply:
PTI Tech is an equal-opportunity employer.