CNC Horizontal Boring Mill Operator

JR Metal Works LLC; Kewaunee (WI); On-site; USD 25,000 - 39,000; Full time

Benefits offered by this job

Competitive pay

Comprehensive benefits

Job summary

JR Metal Works LLC is seeking an Entry-Level CNC Boring Bar Operator for the Heavy Fabrication Department. You will machine large welded assemblies and metal components on a large CNC boring bar, interpreting shop drawings and following established procedures with emphasis on safety, accuracy, and quality.

No prior CNC experience is required; we provide hands-on training to develop machining skills while prioritizing safety, quality, and continuous improvement.

Qualifications

• Previous experience in a manufacturing or industrial environment preferred.
• Ability to read and interpret shop drawings, blueprints, or technical documents.
• Basic mechanical aptitude and willingness to learn CNC machining and boring bar operations.
• Familiarity with measuring tools such as tape measures, calipers, or other dimensional inspection equipment, preferred.
• Previous experience with rigging, overhead cranes, or handling large metal components preferred.
• Ability to follow written and verbal instructions, established procedures, and safety requirements.
• Strong attention to detail and commitment to producing quality work.
• Reliable attendance, a willingness to learn, and the ability to work effectively as part of a team.
• Previous CNC machining or boring bar experience is a plus but is not required.

Responsibilities

• Operate and learn to operate a large CNC boring bar to machine heavy metal components and welded assemblies according to shop drawings and job specifications.
• Read and interpret shop drawings, blueprints, and work instructions to understand machining requirements and dimensional specifications.
• Prepare workpieces and assist with positioning, securing, and aligning large components for machining.
• Assist with material handling and rigging activities, following approved procedures and safety requirements.
• Monitor machining operations and identify potential quality issues, equipment concerns, or deviations from specifications.
• Use measuring tools and inspection methods to verify dimensions and ensure finished work meets quality requirements.
• Follow established setup procedures, machining instructions, and production processes to maintain consistent results.
• Maintain a clean, organized, and safe work area while following all applicable safety procedures.
• Collaborate with Heavy Fabrication team members, supervisors, and other departments to support production schedules and on-time delivery.
• Participate in training and cross-training opportunities to build machining knowledge, equipment proficiency, and manufacturing skills.

Skills

Shop drawings

Mechanical aptitude

Measuring tools

Rigging/Crane work

Safety awareness

Attention to detail

Team player

Willingness to learn CNC

CNC basics

Tools

CNC boring bar

Machining safety

Job description

Company Overview

Where metal meets momentum. Where bold ideas become the products everyone else wishes they built.
Welcome to JR Metal Works. One of the fastest-rising names in American manufacturing.

We combine precision engineering, modern fabrication technology, and true craftsmanship to create products built to last. As we continue to grow, we remain deeply committed to quality, safety, and continuous improvement, on the shop floor and beyond.

At JR Metal Works, you’re not just filling a role. You’re joining a team that values integrity, teamwork, and problem-solving. We invest in your growth so you can build a career with real impact.

We offer competitive pay, a comprehensive benefits package, and clear opportunities for advancement in a company that’s moving forward—fast.

Position Summary

The Entry-Level CNC Boring Bar Operator works within the Heavy Fabrication Department to machine large welded assemblies and metal components to meet engineering specifications and quality standards. This position operates primarily on a large CNC boring bar and requires the ability to interpret shop drawings, follow established manufacturing procedures, and safely handle heavy materials.

Manufacturing experience and mechanical aptitude are important, but previous CNC or boring bar experience is not required. JR Metal Works provides opportunities to develop machining skills through hands-on training, with an emphasis on safety, accuracy, quality, and continuous improvement.

Core Responsibilities

• Operate and learn to operate a large CNC boring bar to machine heavy metal components and welded assemblies according to shop drawings and job specifications.
• Read and interpret shop drawings, blueprints, and work instructions to understand machining requirements and dimensional specifications.
• Prepare workpieces and assist with positioning, securing, and aligning large components for machining.
• Assist with material handling and rigging activities, following approved procedures and safety requirements.
• Monitor machining operations and identify potential quality issues, equipment concerns, or deviations from specifications.
• Use measuring tools and inspection methods to verify dimensions and ensure finished work meets quality requirements.
• Follow established setup procedures, machining instructions, and production processes to maintain consistent results.
• Maintain a clean, organized, and safe work area while following all applicable safety procedures.
• Collaborate with Heavy Fabrication team members, supervisors, and other departments to support production schedules and on-time delivery.
• Participate in training and cross-training opportunities to build machining knowledge, equipment proficiency, and manufacturing skills.

Qualifications

• Previous experience in a manufacturing or industrial environment preferred.
• Ability to read and interpret shop drawings, blueprints, or technical documents.
• Basic mechanical aptitude and willingness to learn CNC machining and boring bar operations.
• Familiarity with measuring tools, such as tape measures, calipers, or other dimensional inspection equipment, preferred.
• Previous experience with rigging, overhead cranes, or handling large metal components preferred.
• Ability to follow written and verbal instructions, established procedures, and safety requirements.
• Strong attention to detail and commitment to producing quality work.
• Reliable attendance, a willingness to learn, and the ability to work effectively as part of a team.
• Previous CNC machining or boring bar experience is a plus but is not required.

Equipment & Machining Environment

This position primarily operates a large CNC boring bar used to machine heavy fabricated components and welded assemblies.

Primary equipment specifications:

• X-axis travel: 120 inches
• Y-axis travel: 100 inches
• Z-axis travel: 60 inches
• W-axis travel: 25 inches
• Rotary table: Full rotary capability

The machine's large working envelope supports machining operations on substantial metal components and welded assemblies. Employees must learn to work safely around large workpieces and follow the required procedures for setup, positioning, material handling, and machining.

Career Growth & Development

JR Metal Works is committed to helping employees build long-term, rewarding careers. Each position is supported by a Position Information Sheet (PIS) that clearly outlines role expectations, skill milestones, and growth pathways.

Position Information Sheets provide transparency into:

• Performance and merit-based pay progression
• Skill and responsibility milestones
• Leadership growth and development opportunities
• Cross-training and internal advancement paths
• Training, certification, and professional development expectations

Advancement at JR Metal Works is based on demonstrated performance, skill mastery, accountability, and alignment with company values. Employees are encouraged to actively engage with their Position Information Sheet and leadership team to track progress and plan their next career step.

This job description is intended to describe the general nature and level of work being performed and is not an exhaustive list of all duties and responsibilities. Duties may change at any time with or without notice.

Employment with JR Metal Works is at-will and may be terminated by either the employee or the Company at any time, with or without cause or notice, in accordance with applicable law.

JR Metal Works is an Equal Opportunity Employer and is committed to providing equal employment opportunities to all employees and applicants. Reasonable accommodations will be provided to qualified individuals with disabilities in accordance with applicable laws.

Employees are expected to comply with all company policies, safety procedures, and applicable federal, state, and local regulations. Nothing in this job description creates a contract of employment or guarantees compensation or advancement.