Prototype Tooling Machinist II - Precision Machining Expert

Lehigh Heavy Forge Corporation; Corona (CA); On-site; USD 70,000 - 100,000; Full time

Job summary

Lehigh Heavy Forge Corporation in Corona, CA, seeks a skilled machinist to set up and operate manual mills, lathes, and grinders, ensuring precise tooling and tolerances.

Ideal candidates have 5+ years of prototype and tooling experience, strong machining math skills, and the ability to read blueprints. You will perform in-process inspections, maintain records, and collaborate across engineering, quality, and production teams.

Qualifications

• High school diploma or equivalent.
• Minimum 5 years of prototype and tooling experience or evidence of mastery.
• Proficiency with machining math, including geometry and trigonometry.
• Ability to use precision measurement tools with a high degree of accuracy.
• Strong understanding of materials.

Responsibilities

• Set up and operate manual milling machines, lathes, grinders, and other machine tools.
• Operate conventional mills, lathes, drill presses, saws, and grinders.
• Work closely with engineering and manufacturing teams to create production tooling.
• Complete set-ups and operate equipment with minimal supervision/assistance.
• Read and interpret blueprints, engineering drawings, GD&T, and work instructions.
• Select appropriate tools, fixtures, speeds, and feeds for efficient machining.
• Perform in-process inspections using calipers, micrometers, height gauges, and other measuring devices.
• Adjust machine settings to maintain tolerances and meet quality standards.
• Troubleshoot machining issues, including tool wear, material inconsistencies, and programming errors.
• Maintain accurate production records, including job travelers, inspection reports, and equipment logs.
• Perform routine maintenance on machines to ensure safe, reliable operation.
• Work collaboratively with engineering, quality, and production teams to improve processes.
• Comply with all safety standards, company policies, and ISO/AS quality requirements.
• Other duties may be added if necessary to meet business needs

Skills

Attention to detail

Mechanical aptitude

Problem-solving skills

Time management

Teamwork and communication

Commitment to safety and quality

Education

High school diploma or equivalent

Technical/vocational training in machining

Job description

Lehigh Heavy Forge Corporation in Corona, CA, seeks a skilled machinist to set up and operate manual mills, lathes, and grinders, ensuring precise tooling and tolerances.

Ideal candidates have 5+ years of prototype and tooling experience, strong machining math skills, and the ability to read blueprints. You will perform in-process inspections, maintain records, and collaborate across engineering, quality, and production teams.