Expert Large Part CNC Precision Machining Services

Transform your complex designs into precision-machined reality with Criterion's advanced CNC capabilities. From prototypes to production runs, we deliver large parts with tolerances down to ±0.0002" for mission-critical applications in medical, aerospace, defense, and photonics industries where failure is not an option.

Large precision CNC machined components on industrial machining center

Our Large Part CNC Precision Machining Services

Complete precision machining solutions for complex large components requiring exacting tolerances and superior quality.

CNC Milling

Precision CNC milling for complex, multi-axis large components with tight tolerances and consistent repeatability using 3-, 4-, and 5-axis capabilities.

CNC Turning

High-precision CNC turning for large cylindrical and complex geometry parts, delivering tolerances down to ±0.0002" with smooth surface finishes.

Swiss Turning

Advanced Swiss turning for complex large components with tight tolerances, utilizing 5, 6, and 8-axis Swiss turning centers with live tooling.

Prototyping

Production-intent prototyping that bridges design and manufacturing, testing fit, function, and manufacturability with full production precision standards.

Quality Inspection

Comprehensive precision inspections using Global Advantage CMM, OASIS optical systems, and Keyence measuring technology with complete documentation.

Mission-Critical Quality

Precision Large Part Machining Excellence

Criterion specializes in machining large, complex components for industries where failure is not an option. Our advanced CNC capabilities, combined with decades of expertise, deliver precision parts with tolerances down to ±0.0002". From medical device components to aerospace applications, we machine challenging materials including titanium, stainless steels, and specialty alloys with uncompromising quality standards.

Large precision machined component being inspected on CMM machine
Proven Performance

Trusted Results

Delivering mission-critical components for industry leaders in medical devices, aerospace, and defense applications.

"Criterion's 5-axis CNC milling capabilities produced our aerospace housing with tolerances we couldn't achieve elsewhere. Their quality is genuinely uncompromising."

James Richardson

"We had a chronic problem with surface finish on our medical device components. Criterion's CNC turning expertise resolved it immediately, cutting our rejection rate to near zero."

Dr. Patricia Chen

"For large part CNC precision machining, Criterion outperforms competitors on both quality and cost. They've become our go-to partner for mission-critical aerospace components."

Michael Torres

"We needed prototypes in two weeks with production-intent quality. Criterion delivered on schedule with parts that moved seamlessly into full production runs without reprogram."

Sarah Mitchell

"Their Quality Inspection service provided comprehensive CMM documentation at no charge, saving us thousands annually while exceeding our FDA compliance requirements."

Robert Kemp

"Fifteen years working with Criterion. Their ProShop ERP system and ISO certifications guarantee consistency. They're not just vendors—they're true partners in our success."

Linda Vasquez

"Their OASIS optical inspection system caught dimensional variations our previous supplier missed. Criterion's large part CNC precision machining delivers specs we can absolutely depend on."

David Oshiro

"Woman-owned, ITAR-registered, ISO 13485 certified—Criterion ticks every box. Their 5-axis milling on our titanium assemblies achieved ±.0002" tolerances consistently."

Captain Elena Rostov

"Criterion's 5-axis CNC milling capabilities produced our aerospace housing with tolerances we couldn't achieve elsewhere. Their quality is genuinely uncompromising."

James Richardson

"We had a chronic problem with surface finish on our medical device components. Criterion's CNC turning expertise resolved it immediately, cutting our rejection rate to near zero."

Dr. Patricia Chen

"For large part CNC precision machining, Criterion outperforms competitors on both quality and cost. They've become our go-to partner for mission-critical aerospace components."

Michael Torres

"We needed prototypes in two weeks with production-intent quality. Criterion delivered on schedule with parts that moved seamlessly into full production runs without reprogram."

Sarah Mitchell

"Their Quality Inspection service provided comprehensive CMM documentation at no charge, saving us thousands annually while exceeding our FDA compliance requirements."

Robert Kemp

"Fifteen years working with Criterion. Their ProShop ERP system and ISO certifications guarantee consistency. They're not just vendors—they're true partners in our success."

Linda Vasquez

"Their OASIS optical inspection system caught dimensional variations our previous supplier missed. Criterion's large part CNC precision machining delivers specs we can absolutely depend on."

David Oshiro

"Woman-owned, ITAR-registered, ISO 13485 certified—Criterion ticks every box. Their 5-axis milling on our titanium assemblies achieved ±.0002" tolerances consistently."

Captain Elena Rostov

"Criterion's 5-axis CNC milling capabilities produced our aerospace housing with tolerances we couldn't achieve elsewhere. Their quality is genuinely uncompromising."

James Richardson

"We had a chronic problem with surface finish on our medical device components. Criterion's CNC turning expertise resolved it immediately, cutting our rejection rate to near zero."

Dr. Patricia Chen

"For large part CNC precision machining, Criterion outperforms competitors on both quality and cost. They've become our go-to partner for mission-critical aerospace components."

Michael Torres

"We needed prototypes in two weeks with production-intent quality. Criterion delivered on schedule with parts that moved seamlessly into full production runs without reprogram."

Sarah Mitchell

"Their Quality Inspection service provided comprehensive CMM documentation at no charge, saving us thousands annually while exceeding our FDA compliance requirements."

Robert Kemp

"Fifteen years working with Criterion. Their ProShop ERP system and ISO certifications guarantee consistency. They're not just vendors—they're true partners in our success."

Linda Vasquez

"Their OASIS optical inspection system caught dimensional variations our previous supplier missed. Criterion's large part CNC precision machining delivers specs we can absolutely depend on."

David Oshiro

"Woman-owned, ITAR-registered, ISO 13485 certified—Criterion ticks every box. Their 5-axis milling on our titanium assemblies achieved ±.0002" tolerances consistently."

Captain Elena Rostov
The Criterion Difference

Why Choose Criterion Precision Machining?

Your trusted partner for large part precision machining where quality and reliability matter most.

Extreme Precision

Tolerances down to ±0.0002" with advanced multi-axis CNC capabilities and certified quality systems.

Mission-Critical Focus

Specialized expertise in no-failure industries including medical devices, aerospace, defense, and photonics applications.

Advanced Technology

State-of-the-art CNC equipment, Global Advantage CMM, and OASIS optical inspection systems ensure consistent quality.

Certified Excellence

ISO 13485 and ISO 9001 certified with FDA and ITAR registration for comprehensive compliance.

Meet Our Expert Team

Experienced professionals dedicated to precision machining excellence.

Tanya DiSalvo, President of Criterion Precision Machining

Tanya DiSalvo

President

As the third-generation owner of Criterion Precision Machining, Tanya DiSalvo leads our woman-owned company with a commitment to excellence in precision machining. Under her leadership, Criterion has evolved from its 1953 origins as a general machine shop into a specialized precision machining company serving mission-critical industries. Tanya's vision focuses on maintaining the highest quality standards while investing in advanced technology and expanding capabilities to meet the exacting demands of medical device, aerospace, defense, and photonics industries. Her dedication to quality and innovation ensures Criterion continues to be a trusted partner for components where failure is not an option, building on over 70 years of machining expertise while positioning the company for future growth in precision manufacturing.

Mike Pinchot, Estimator/Project Manager at Criterion Precision Machining

Mike Pinchot

Estimator/Project Manager

Mike Pinchot brings extensive expertise in project management and cost estimation to Criterion's precision machining operations. As Estimator and Project Manager, Mike works closely with clients to understand their complex machining requirements and develops accurate project timelines and cost assessments for large part CNC machining projects. His deep understanding of machining processes, materials, and manufacturing capabilities enables him to provide clients with realistic expectations while ensuring projects are completed on time and within budget. Mike's attention to detail and comprehensive project management approach are essential for coordinating the complex workflows required for precision machining of large components. His expertise spans the entire project lifecycle, from initial consultation and quoting through production planning and delivery, making him an invaluable resource for clients with mission-critical machining needs.

Kelly Marflak, Quality Manager at Criterion Precision Machining

Kelly Marflak

Quality Manager

Kelly Marflak oversees Criterion's comprehensive quality assurance program, ensuring every large part meets the exacting standards required for mission-critical applications. As Quality Manager, Kelly manages the company's ISO 13485 and ISO 9001 certified quality systems, overseeing precision inspections using advanced equipment including the Global Advantage CMM, OASIS optical inspection systems, and Keyence measuring technology. Her expertise is crucial for maintaining the tight tolerances down to ±0.0002" that Criterion's clients demand. Kelly's thorough approach to quality control includes multiple inspection points throughout the manufacturing process, comprehensive documentation, and continuous improvement initiatives. Her dedication to quality excellence ensures that every component leaving Criterion meets or exceeds specifications, supporting the company's reputation as a trusted partner for industries where failure is not an option, including medical devices, aerospace, defense, and photonics applications.

Frequently Asked Questions

What size range qualifies as 'large part' CNC machining at Criterion?

Our large part CNC machining capabilities accommodate components that require advanced multi-axis equipment and specialized handling. We work with parts ranging from medium to large scale, utilizing our 3-, 4-, and 5-axis CNC milling centers and multi-axis turning equipment to handle complex geometries and challenging dimensions while maintaining tight tolerances.

What tolerances can you achieve on large CNC machined parts?

What materials do you machine for large part applications?

Do you provide prototyping services for large parts?

What quality certifications does Criterion maintain?

What industries do you serve with large part CNC machining?

What is your typical lead time for large CNC machined parts?

Do you provide inspection reports and documentation?

Need Precision Large Part Machining?

Contact our experts to discuss your specific requirements and capabilities.

Certified & Trusted

Awards and Recognition

ISO 13485 certification logo

ISO 13485 Certified

Medical device quality management system

ISO 9001 certification logo

ISO 9001 Certified

Quality management system standard

WBENC membership logo

WBENC Member

Women's Business Enterprise certified

Ready to Start Your Large Part CNC Machining Project?

Get in touch with our precision machining experts to discuss your requirements and receive a detailed quote for your large part manufacturing needs.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 216-267-1733 You can also send us a quick email at office@criteriontool.com