Gretna Machine Shop

🔎At a Glance

Company Name: Gretna Machine Shop
Location: Houston, TX (Northwest)
Shop Type: Contract Manufacturer / Job Shop
Industries Served: Aerospace, Energy, Oil & Gas, Government
Typical Work: High-Mix, Low-Volume + Production Runs
Machining Capabilities: 3-axis, 4-axis, 5-axis milling, CNC turning with live tooling
Materials: Aluminum, Stainless Steel, Titanium, Inconel, Monel, Hastelloy, Alloy Steels
Certifications: AS9100 Rev. D, ISO 9001:2015
Shift Environment: 1st & 2nd shift (growing 2nd shift team)

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About Gretna Machine Shop

Gretna Machine Shop is a precision CNC machining company located in Houston, TX, supporting customers across aerospace, energy, oil & gas, and government sectors. The shop focuses on tight-tolerance, complex components used in critical applications — from deep-earth drilling to aerospace systems.

Founded in 1980, Gretna has built a reputation for quality, consistency, and on-time delivery by combining skilled machinists, modern CNC equipment, and disciplined manufacturing processes. The company operates out of a 50,000 sq. ft., fully air-conditioned facility and continues to invest in new equipment and talent as it grows.

As a lean manufacturing facility, Gretna supports both prototype and production work, making it a strong fit for machinists who want variety, challenge, and long-term stability.

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The Work You’ll Be Doing

Machinists at Gretna Machine Shop work on:

• Part Types: Precision components for aerospace systems, oil & gas applications, and energy equipment
• Production Style: High-mix, low-volume with some production runs
• Typical Tolerances: Tight-tolerance work (aerospace + energy-grade parts)
• Programming & Setup: Setup-focused roles with program edits at the machine; strong collaboration with experienced programmers (who are machinists themselves)
• Materials Machined:
  • Aluminum (2011, 2024, 6061, 7075)
  • Stainless steels (13-8, 17-4, 300 series, 410)
  • Titanium
  • Inconel (718, 625, 925)
  • Monel, Hastelloy, Waspalloy
  • Carbon & alloy steels (4140, 4340, 8620, etc.)

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Machining Capabilities

• CNC Milling (3-axis, 4-axis, full 5-axis)
• CNC Turning with Live Tooling
• Multi-Axis Machining
• Prototype to Production Manufacturing
• Build-to-Print Precision Machining

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CNC Equipment

Multi-Axis / Advanced Machines

• True 5-axis machining capability (including vertical lathe applications)
• High-speed machining up to 15,000 RPM

CNC Mills

• Travel ranges:
  • X: 30” – 60.63”
  • Y: 16” – 29.92”
  • Z: 20” – 29.92”
• Full 4th axis + 5-axis capability
• Machines include Haas and Okuma platforms

CNC Lathes / Mill-Turn

• Max turning diameter: 15.7” – 35.4”
• Max turning length: up to 120”
• Spindle bore: 2.1” – 12”
• Live tooling with Y-axis capability
• Machines include Doosan / DN Solutions platforms

Inspection Equipment

• Hexagon CMM (climate-controlled room)
• Gagemaker MIC Trac MT-3000
• Mitutoyo Profile Projector
• 12” Comparator (digital readout)
• Hardness Tester

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Software & Programming

• Programming handled by Class A machinists (not just programmers)
• Strong floor support during setup and production
• Focus on efficient, machinist-driven programming workflows

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Quality, Inspection & Certifications

Gretna Machine Shop maintains strict quality standards supported by:

• Certifications:
  • AS9100 Rev. D
  • ISO 9001:2015
• Inspection Capabilities:
  • CMM inspection in climate-controlled environment
  • Advanced measurement systems and comparators
• Quality Approach:
  • In-process inspection
  • First article validation
  • Lean manufacturing principles
  • Strong focus on waste reduction and process control

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Why Machinists Choose to Work at Gretna Machine Shop

Machinists here value:

• Variety of work — high-mix jobs vs repetitive production
• Work on real aerospace and energy components
• Air-conditioned 50,000 sq. ft. facility
• Modern machines and continued investment in equipment
• Strong shop culture with long-tenured machinists (20–30+ years)
• Programmers who understand machining and support the floor
• Opportunity to grow into leadership roles (especially on 2nd shift)
• A team that lives its core values:
  • Love what you do
  • Be helpful
  • Stay lean
  • Keep learning
  • Raise the bar

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Open CNC Machinist Jobs

Gretna Machine Shop is currently hiring for:

• CNC Machinists (5-Axis Milling)
• CNC Lathe Machinists (Live Tooling)

👉 View current CNC machining jobs at Gretna Machine Shop