Swiss Turning
Multi-axis CNC Swiss screw machining for slender, complex components with diameters as small as .010" and tolerances down to ±.0002", ideal for high-volume precision production.
When tolerances measured in ten-thousandths of an inch matter, Criterion Precision Machining delivers. Our small diameter Swiss turning capabilities—handling diameters as fine as .010" with tolerances down to ±.0002"—serve the most demanding medical device, aerospace, defense, and photonics applications where failure simply isn't an option.

From micro-scale surgical components to complex aerospace parts, we deliver precision Swiss turning solutions across critical industries.
Multi-axis CNC Swiss screw machining for slender, complex components with diameters as small as .010" and tolerances down to ±.0002", ideal for high-volume precision production.
High-precision CNC turning for cylindrical and complex geometry parts, delivering tight tolerances and smooth surface finishes across medical, aerospace, and defense applications.
Certified quality assurance with CMM, OASIS optical inspection, and Keyence systems—measuring up to 99 dimensions on up to 100 parts simultaneously at no charge for documentation.
Production-intent prototype runs built to the same precision and compliance standards as full production orders, enabling seamless transition to high-volume manufacturing.
Precision 3-, 4-, and 5-axis CNC milling for intricate, multi-axis components requiring consistent repeatability and tight tolerances in mission-critical industries.
Skilled machining of titanium, stainless steels, specialty plastics such as PEEK, aluminum, and high-performance alloys for the most challenging small-diameter part requirements.
Criterion Precision Machining brings over 70 years of machining heritage to every Swiss turned component. Our 5-, 6-, and 8-axis CNC Swiss screw centers produce slender, intricate parts with diameters starting at .010" and tolerances as tight as ±.0002"—essential for surgical instruments, implantable devices, aerospace hardware, and photonic assemblies. We work across titanium, stainless steels, specialty plastics, and exotic alloys, delivering exceptional surface finishes and complex micro-features that meet the exacting standards of the U.S. medical device and defense supply chain.

Decades of proven precision, advanced technology, and an unwavering commitment to quality set Criterion apart for small diameter Swiss turning.
Tolerances as tight as ±.0002" and diameters starting at .010" for the most demanding micro-part requirements.
ISO 13485 and ISO 9001 certified with FDA and ITAR registration, meeting the strictest U.S. medical device and defense standards.
Founded in 1953 and headquartered in Brook Park, Ohio, Criterion has served mission-critical industries for over seven decades.
Multi-system in-house inspection including CMM, OASIS optical, and Keyence ensures every Swiss turned part ships fully verified.
Dedicated professionals committed to precision, quality, and mission-critical delivery.

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.

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.

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.

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.

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.

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.

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.
Swiss machining refers to a precision turning process originally developed in Switzerland for watchmaking. A Swiss-style lathe feeds bar stock through a guide bushing that supports the material very close to the cutting tool, enabling extremely tight tolerances and excellent surface finishes on long, slender, small-diameter components.
Talk to our team for a free consultation and quote tailored to your application.
Quality management standard for medical device manufacturing.
Globally recognized quality management system certification.
Nationally recognized women's business enterprise certification.
Share your part requirements with our team and we'll respond with a detailed quote. We work with medical device, aerospace, defense, and photonics customers across the United States.
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.
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.