CNC Precision Turning Services — Pewaukee, WI

Get close-tolerance CNC precision turning for Pewaukee, WI manufacturers that cannot risk part failure. Criterion Precision Machining supports medical device, aerospace, defense, and photonics programs with CNC turning, Swiss turning, live tooling, production-intent prototyping, in-house inspection, and traceability. Built for Wisconsin’s advanced manufacturing supply chain, our turning services help engineers move confidently from qualification to repeat production.

Precision CNC turned metal components

Our CNC Precision Turning Services

Precision turning capabilities for complex, close-tolerance parts in medical, aerospace, defense, and photonics applications.

CNC Turning

High-precision CNC turning for cylindrical and complex-geometry parts, including live-tooling options that reduce multiple setups and improve repeatability on mission-critical components.

Swiss Turning

Small-diameter, high-repeatability Swiss turning for intricate components, deep cuts, micro-features, and diameters as small as .010 inches.

Precision Prototyping

Production-intent prototype runs made on production equipment, helping approved parts transition directly into higher-volume manufacturing without avoidable requalification.

Quality Inspection

Certified inspection using CMM, OASIS, and Keyence systems, with FAIRs, Certificates of Conformance, and material traceability documentation available.

Mass Finishing

In-house deburring, surface conditioning, vibratory finishing, high-energy mass finishing, and light assembly to complete turned parts under one quality system.

Laser Marking

Permanent fiber-laser marking for serial numbers, lot codes, UDI marks, 2D matrix codes, and traceability requirements on regulated components.

CNC turning operator inspecting precision machined parts

Our Precision Turning Process

Print Review and Program Fit

Send your 2D drawings, 3D models, material callouts, tolerance requirements, and expected volumes. Our team reviews manufacturability, documentation needs, and program fit for Pewaukee and Wisconsin manufacturers serving regulated supply chains.

Process Planning and Machine Selection

Precision Turning and Production

Inspection and Documentation

Finishing and Controlled Delivery

The Criterion Difference

Why Choose Criterion Precision Machining?

Criterion Precision Machining combines advanced equipment, certified systems, and decades of mission-critical manufacturing experience.

No-Failure Focus

Built for medical, aerospace, defense, and photonics parts where performance cannot fail.

Tight Tolerances

Supports Pewaukee manufacturers with tolerances down to ±0.0002 inches on qualified features.

Certified Systems

ISO 13485, ISO 9001, FDA, and ITAR readiness support regulated supply-chain needs.

Integrated Capability

In-house inspection, finishing, EDM, and marking reduce vendor handoffs for Wisconsin OEMs.

Meet The Precision Team

Experienced leaders supporting regulated precision machining programs.

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 types of parts are best suited for CNC precision turning?

CNC turning is typically best for cylindrical, round, threaded, or concentric components, including shafts, pins, housings, bushings, fasteners, and optical mounts. Criterion Precision Machining also uses live tooling for parts that need milled flats, holes, slots, or cross-features in the same setup, reducing tolerance stack-up and supporting tighter repeatability.

How tight can your CNC turning tolerances be?

When should I choose Swiss turning instead of standard CNC turning?

Can you support prototype and production turning programs?

What materials can you machine with CNC turning?

How do you verify quality on precision turned parts?

Do you offer finishing, marking, or secondary operations?

What should I include when requesting a CNC turning quote?

Still Have Turning Questions?

Send your print and get practical guidance from our team.

Certified & Trusted

Awards and Recognition

ISO 13485 certification logo

ISO 13485

Medical device quality management certification.

ISO 9001 certification logo

ISO 9001

Certified quality system for consistent production.

ITAR registered trust badge

ITAR Registered

Registered for controlled defense data handling.

Request a Precision Turning Quote

Share your drawings, material requirements, target volumes, and documentation needs. Our team will review manufacturability, tolerance requirements, and production expectations before recommending the right turning approach.

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.