MACHINING
At Arnette Pattern Company, our machining division has over 75 years of CNC machining expertise. With 60+ advanced machines, we deliver precise parts and custom solutions. Using SolidWorks and Mastercam, we achieve micrometer-level accuracy for prototypes and high-volume production. Our quality inspectors maintain rigorous standards through CMM testing, ensuring reliability and cost control for demanding industries.
WHAT'S INCLUDED
INDUSTRIAL MOLD PRODUCTION
Expert mold creation using sand, ceramic, or metal-based materials tailored to your project needs.
MOLD FABRICATION
Precision fabrication techniques to ensure high-quality production of molds for various applications.
CORE BOX DEVELOPMENT
Customized core box solutions designed for efficient casting and optimal performance in production.
CORE BOX CREATION
Utilizing advanced materials and processes to create durable core boxes that meet industry standards.
PATTERN REPAIRS & MODIFICATIONS
Comprehensive repair services for existing patterns, ensuring longevity and reliability in production.
PATTERN MAINTENANCE
Offering modifications and upgrades to enhance the performance of your current patterns.
CASTING SUPPORT COLLABORATION
Partnering with foundries to provide seamless support from pattern design to final casting, ensuring quality results.
END-TO-END SOLUTIONS
Streamlined processes for expedited casting options, including free quotes for urgent projects.
EXPEDITED SERVICES
Providing free quotes and urgent service options for clients needing quick turnaround on projects.
BUILT IN THE US
75+ YEARS OF EXPERIENCE
FULL SERVICE SHOP
FAQS
FREQUENTLY ASKED QUESTIONS
What types of precision CNC machining services do you offer?
We deliver top-tier precision CNC machining, including milling, turning, grinding, boring, drilling, tapping, broaching, manual milling, horizontal boring, and advanced turning with lathes and vertical turret lathes (VTLs). We also provide custom machining for tight-tolerance parts, machine building, and rebuilding for industrial applications.
What are your large-scale machining capacities?
Our heavy-duty setup handles massive projects with table sizes up to 174" x 60" for oversized CNC milling and chuck sizes up to 86" for large-diameter turning. Horizontal boring mills support parts up to 80,000 lbs for industrial precision engineering.
What materials can you handle in custom machining
We machine steel, aluminum, stainless steel, titanium, exotic alloys, plastics, composites, and specialty materials with high-precision CNC mills and lathes, achieving tight tolerances suited for industries like steel-making, power transmission, aerospace, oil & gas, and heavy equipment.
How precise are your machining tolerances in CNC operations
We achieve tight tolerances down to microns, depending on the project. Our advanced CNC equipment ensures consistent accuracy for complex components in precision machining.
What is the typical lead time for custom machining projects?
We aim for 2-4 weeks on standard jobs, with expedited options for prototypes in 3-7 days—or quicker in urgent cases. Factors like part complexity and material availability influence timelines in CNC machining.
Do you offer industrial machine repairs and rebuilding services?
Yes, we specialize in repairs and full rebuilds, including troubleshooting mechanical issues, hydraulic fixes, and electrical problems to restore equipment to like-new condition. Our "strip and advise" program involves disassembling your machine, evaluating its condition, and advising on repairs to control costs effectively—ideal for minimizing downtime and expenses.
Can you provide prototyping or small-batch production in CNC machining?
Absolutely! Our CNC milling and turning centers handle quick-turn prototypes and scalable production, from one-off customs to thousands of units, with flexible scaling and automation for efficient manufacturing.
What equipment do you use for precision machining?
Our arsenal of over 60 machines includes state-of-the-art CNC machines, lathes, mills, grinders, boring mills, high-capacity horizontal machining centers, and other advanced tools, providing versatility, in-house efficiency, and faster turnarounds for large-scale and complex custom fabrication.
How do you ensure quality in precision machining services?
We employ rigorous inspections, including CMM (Coordinate Measuring Machine) testing, and adhere to industry standards for every project in CNC and custom machining. Our dedicated quality inspector department oversees all quality issues, and we continue to invest in this department to maintain the highest levels of precision and reliability.
BUILT TO SPEC. DESIGNED TO LAST.
Decades of experience meet tomorrow’s tech. At Arnette-Midwest, we blend hands-on craftsmanship with advanced quality control systems to produce components you can rely on. Need design support? We’ll work with your concept — or build it from the ground up.
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