Machining the Future: Arnette Pattern Company’s CNC Precision for Power & Beyond
At Arnette Pattern Company in Granite City, IL, CNC machining is the core of our business. From large-scale castings to critical power components, our vertical machining centers, dual large bridge mills, and heavy-duty CNC lathes deliver precision, scale, and reliability across two full-service facilities.
Built for Big: Large-Part Machining at Scale
Our large bridge mills—with extensive travel and table capacity—handle oversized castings, structural weldments, and custom power housings that most shops simply can’t accommodate. Paired with high-performance vertical machining centers, we produce complex, high-quality parts with consistency and speed.
When it comes to turning, our CNC lathes manage large-diameter work, including:
- Machined rings for underwater piping systems
- Bearing sleeves for the power generation industry—steady, high-demand production
CNC + Manual: Full-Spectrum Machining Solutions
CNC machining powers our high-volume runs (G-code programming, CAM-driven efficiency, automated tool paths), while our experienced manual machinists tackle prototypes, repairs, and custom fixtures with proven skill. This dual capability means faster setups, flexible scheduling, and unmatched versatility.
Power Industry Machining: Reliable Work That Keeps Growing
The power sector is a cornerstone of our machining workload:
- Turbine component machining
- Generator shaft sleeves
- Substation structural bases
- High-voltage support components
With electrification trends, data center expansion, and nationwide grid modernization, precision machining for power infrastructure remains consistent, long-term, and mission-critical—and our order books reflect it.
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The Future Runs on Precision Machining
As renewable energy, AI infrastructure, and industrial reshoring drive demand, the need for large-format, high-precision CNC machining is only accelerating. At Arnette, we’re not just meeting today’s specs—we’re machining tomorrow’s grid.
From massive castings to power-critical components, we deliver the precision that keeps America powered.