CNC Precision Prototype Parts Manufacturing

Build confidence in your next critical component with production-intent CNC prototype parts manufactured to the same standards used for final production. Criterion Precision Machining supports engineers with tight-tolerance milling, turning, Swiss machining, EDM, inspection, and traceability for medical, aerospace, defense, and photonics programs where prototype performance must translate directly into repeatable, manufacturable parts without requalification risk.

CNC machining precision prototype metal part

Our CNC Precision Prototype Parts Manufacturing Services

Production-intent prototype machining, turning, EDM, inspection, and finishing support for regulated, mission-critical parts from concept through production.

CNC Prototyping

Prototype runs are produced on production machine cells and inspected with production metrology, helping qualified parts move into higher-volume manufacturing without reprogramming or unnecessary requalification.

5-Axis Milling

Advanced 3-, 4-, and 5-axis milling supports complex geometries, tight pockets, fine features, and challenging materials for medical, aerospace, defense, and photonics components.

CNC Turning

Multi-axis CNC turning with live tooling produces cylindrical and complex-geometry parts with smooth finishes, tight tolerances, and reduced tolerance stack-up from fewer setups.

Swiss Turning

Swiss turning supports small-diameter, high-repeatability components with micro-features, deep cuts, and diameters as small as .010 inches for demanding precision applications.

Quality Inspection

Integrated inspection includes CMM, OASIS optical measurement, Keyence systems, First Article Inspection, final reports, Certificates of Conformance, and material traceability documentation.

Wire EDM

Wire EDM produces burr-free profiles, sharp internal corners, narrow slots, intricate contours, and thin-wall features in hardened steels, titanium, stainless, and specialty alloys.

Engineer reviewing CNC prototype drawings near machining center

Our Prototype-To-Production Process

Engineering Review And Feasibility Planning

Our team reviews drawings, tolerances, materials, regulatory needs, and expected production volumes to confirm feasibility. This early engineering review helps identify machining risks, inspection requirements, and documentation needs before prototype manufacturing begins.

Production-Intent Process Development

Precision CNC Prototype Machining

Inspection And Documentation Review

Seamless Prototype-To-Production Transition

The Criterion Difference

Why Choose Criterion Precision Machining?

Choose a prototype manufacturing partner built for precision, traceability, and production readiness.

Production Intent

Prototype parts are built for qualification, manufacturability, and smooth transition into production.

Certified Quality

ISO 13485 and ISO 9001 systems support regulated, documentation-heavy manufacturing programs.

Tight Tolerances

Tight tolerances down to ±0.0002 inches support complex, mission-critical component requirements.

Controlled Workflow

In-house machining, EDM, laser marking, finishing, and inspection reduce vendor handoff risk.

Meet The Criterion Team

Experienced manufacturing leaders supporting no-failure industries.

Professional headshot of Tanya DiSalvo, President

Tanya DiSalvo

President

As third-generation owner and President of Criterion Precision Machining, Tanya DiSalvo leads our commitment to delivering mission-critical components for Texas railroad infrastructure. Under her leadership, Criterion has evolved into a woman-owned precision machining company specializing in the 'No Failure' sectors, including railroad safety systems. Tanya's vision has guided the company's investment in advanced CNC technology and ISO certification programs, ensuring our Texas railroad clients receive components that meet the most stringent safety and performance standards. Her dedication to quality excellence and operational efficiency has positioned Criterion as a trusted partner for railroad manufacturers requiring precision components that perform reliably across Texas's diverse operating environments, from Gulf Coast humidity to West Texas desert conditions.

Professional headshot of Kelly Marflak, Quality Manager

Kelly Marflak

Quality Manager

Kelly Marflak serves as Quality Manager at Criterion Precision Machining, overseeing our comprehensive quality assurance programs critical to railroad component manufacturing. With deep expertise in precision inspection protocols, Kelly manages our certified Quality Assurance program that includes multiple points of precision inspection built into manufacturing processes. She oversees the operation of our Global Advantage CMM with PC-DMIS software, OASIS Optical Automatic Smart Inspection System, and Keyence measuring systems capable of measuring up to 99 dimensions simultaneously. Kelly's meticulous attention to detail ensures every railroad component meets the exacting tolerances and safety standards required for Texas railroad applications. Her leadership in quality control processes has been instrumental in maintaining our ISO 13485 and ISO 9001 certifications, providing railroad manufacturers with the documentation and compliance verification essential for safety-critical components operating across Texas's extensive rail network.

Professional headshot of Mike Pinchot, Estimator/Project Manager

Mike Pinchot

Estimator/Project Manager

Mike Pinchot brings extensive project management expertise to Criterion's railroad machining operations as Estimator and Project Manager. With deep understanding of precision manufacturing requirements, Mike works closely with Texas railroad clients to develop accurate project estimates and manage complex machining programs from concept through delivery. His technical expertise enables him to assess challenging railroad component specifications and coordinate multi-axis machining operations, Swiss turning processes, and quality inspection requirements. Mike's project management approach ensures railroad components are delivered on time and within budget while meeting the stringent quality standards required for safety-critical applications. His collaborative work with engineering teams and manufacturing personnel has streamlined processes for producing complex railroad parts, from prototype development through full production runs, ensuring Texas railroad infrastructure receives components manufactured to the highest precision standards.

Professional headshot of David Glass, Chief Financial Officer

David Glass

Chief Financial Officer

David Glass serves as Chief Financial Officer at Criterion Precision Machining, bringing strategic financial leadership to support our continued growth and investment in advanced manufacturing capabilities. With his comprehensive understanding of manufacturing economics and operational efficiency, David ensures that our precision machining operations remain competitive while maintaining the highest quality standards. His financial expertise enables Criterion to make strategic investments in cutting-edge CNC equipment, quality systems, and workforce development that directly benefit our clients in mission-critical industries. David's analytical approach to business management helps optimize our manufacturing processes and resource allocation, ensuring we can deliver exceptional value to customers while maintaining the financial stability necessary for long-term partnerships. His commitment to operational excellence supports our ability to serve the demanding requirements of medical device, aerospace, defense, and photonics manufacturers who rely on our precision machining capabilities.

Kellyanne Gottschalk, Internal Systems Manager at Criterion Precision Machining

Kellyanne Gottschalk

Internal Systems Manager

Kellyanne Gottschalk serves as Internal Systems Manager at Criterion Precision Machining, responsible for managing and optimizing the company's operational and business systems, including the ProShop ERP platform. Her role is critical in ensuring seamless workflow from order intake to final delivery, enabling real-time visibility into production scheduling, quality documentation, and compliance tracking. Kellyanne's expertise in systems management supports Criterion's ability to scale efficiently while maintaining the rigorous documentation and traceability standards required by regulated industries such as medical devices and aerospace. Her work underpins the company's operational excellence and helps ensure every project is delivered on time and in full compliance.

Nilda Feliciano, Customer Service representative at Criterion Precision Machining

Nilda Feliciano

Customer Service

Nilda Feliciano is the Customer Service representative at Criterion Precision Machining, serving as a dedicated point of contact for clients throughout the entire order lifecycle. From initial inquiries to order updates and delivery coordination, Nilda ensures that every client receives responsive, clear, and professional communication. Her commitment to customer satisfaction reflects Criterion's values of reliability and partnership, particularly important for clients in time-sensitive industries like aerospace, defense, and medical devices. Nilda's friendly and knowledgeable approach helps build lasting relationships with customers, ensuring they feel supported and informed at every stage of their project with Criterion.

Bonnie Paletta, Office Administrator at Criterion Precision Machining

Bonnie Paletta

Office Administrator

Bonnie Paletta serves as Office Administrator at Criterion Precision Machining, keeping the day-to-day operations of the business running smoothly. Her organizational skills and attention to detail ensure that administrative processes, documentation, and internal coordination are handled efficiently, freeing up the production and quality teams to focus on delivering precision components. Bonnie is a vital part of the Criterion team, contributing to the company's culture of professionalism and reliability. Her support role touches every department, helping to maintain the high standards of communication and organization that Criterion's clients in medical device, aerospace, and defense industries depend on.

Frequently Asked Questions

What is precision parts manufacturing?

Precision parts manufacturing is the controlled production of components with very tight dimensional, geometric, and surface requirements. At Criterion Precision Machining, this includes CNC milling, CNC turning, Swiss turning, Wire EDM, in-process inspection, final inspection, and traceability documentation for regulated industries where small tolerance deviations can affect performance, safety, or compliance.

What makes a prototype production-intent?

Do you make one-off prototype parts?

What materials can be used for CNC prototype parts?

What tolerances can you hold on prototype parts?

Can you support regulated industry prototype requirements?

How are prototype parts inspected?

How long does CNC prototype manufacturing take?

Still Have Prototype Questions?

Send your drawings and requirements for expert review.

Certified & Trusted

Awards and Recognition

ISO 13485 certification logo

ISO 13485

Medical device quality management certification.

ISO 9001 certification logo

ISO 9001

Certified quality management system standard.

WBENC certification logo

WBENC Member

Recognized woman-owned business enterprise membership.

Ready To Build Production-Intent Prototypes?

Share your drawings, tolerances, materials, and production goals. Our team will review requirements and help determine the right prototype-to-production path.

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.