CNC Mold Programmer & Machinist – Injection Molding

PTA Plastic; Niwot (CO); On-site; USD 41,000 - 55,000; Full time

Job summary

PTA Plastics in Niwot, CO is seeking a CNC Specialist to program, set up, and operate CNC milling machines, lathes, and EDM equipment for high-precision molds and tooling used in plastic injection molding.

You will read blueprints and CAD/CAM files, choose tooling, set speeds and feeds, and troubleshoot to maintain accuracy and efficiency. A minimum of 3 years CNC machining experience and a high school diploma are required, with technical certification or an associate degree preferred.

Qualifications

• High school diploma or equivalent required; technical certification or associate degree in CNC machining preferred.
• Minimum of 3+ years in CNC machining, preferably mold-making or injection molding environments.
• Proficiency in CNC programming (G-code, M-code) and CAD/CAM software (Mastercam, SolidWorks, or equivalent).
• Strong understanding of machining principles, tooling selection, and mold manufacturing processes.
• Ability to read and interpret engineering drawings, blueprints, and GD&T specifications.

Responsibilities

• Program, set up, and operate CNC milling machines, lathes, and EDM equipment to produce molds and tooling.
• Read and interpret technical drawings, blueprints, and CAD/CAM files to ensure precision machining.
• Select appropriate tooling, cutting speeds, and feed rates for optimal machining efficiency.
• Perform machine adjustments, tool changes, and calibrations to maintain accuracy and consistency.
• Manufacture and modify injection mold components and collaborate with engineering to improve mold designs.
• Troubleshoot machining and tooling issues to enhance production efficiency and minimize downtime.
• Inspect machined parts using calipers, micrometers, and CMM and maintain documentation of programs and parameters.

Skills

CNC machining

Blueprint reading

Problem solving

Attention to detail

Education

High school diploma

Technical certification or associate degree in CNC machining

Tools

Mastercam

SolidWorks

CAD/CAM

Job description

PTA Plastics in Niwot, CO is seeking a CNC Specialist to program, set up, and operate CNC milling machines, lathes, and EDM equipment for high-precision molds and tooling used in plastic injection molding.

You will read blueprints and CAD/CAM files, choose tooling, set speeds and feeds, and troubleshoot to maintain accuracy and efficiency. A minimum of 3 years CNC machining experience and a high school diploma are required, with technical certification or an associate degree preferred.