CNC Milling
Multi-axis CNC milling for complex photonic components requiring tight tolerances and consistent repeatability. Our 3-, 4-, and 5-axis capabilities handle intricate lens housings and optical system parts with precision.
Photonic and optical components demand tolerances that leave no room for error. Criterion Precision Machining delivers exacting CNC turning, Swiss turning, and 5-axis milling for lens housings, optical mounts, and precision photonic assemblies. With ISO 13485 and ISO 9001 certifications and over 70 years of machining legacy, we're the partner your photonics project demands.

Comprehensive precision machining solutions for photonic and optical components, from prototyping through full production with certified quality.
Multi-axis CNC milling for complex photonic components requiring tight tolerances and consistent repeatability. Our 3-, 4-, and 5-axis capabilities handle intricate lens housings and optical system parts with precision.
High-precision CNC turning for cylindrical optical components and photonic assemblies. We achieve tolerances down to ±.0002" with smooth surface finishes critical for optical alignment and performance.
Swiss turning for small-diameter, high-precision photonic parts with micro-sized features. Ideal for lens mounts and slender optical components requiring exceptional surface finish and tolerances down to ±.0002".
Production-intent prototyping for photonic and optical components, including lens housings and optical system parts. Prototypes are produced on the same machines as final production, enabling direct scale-up with no re-qualification.
Certified quality inspection using CMM, OASIS optical inspection, and Keyence systems to validate photonic component dimensions and surface specifications with full documentation included at no charge.
Skilled machining of titanium, stainless steels, specialty plastics, PEEK, and precision alloys commonly required for photonic and optical component applications in demanding environments.
Photonic components operate at the edge of physical tolerances—where a fraction of a thousandth of an inch determines system performance. Criterion Precision Machining brings over 70 years of machining expertise to lens housings, optical mounts, and photonic assemblies. Our ISO-certified facility in Brook Park, Ohio, combines Swiss turning, multi-axis CNC milling, and advanced optical inspection to deliver components that meet the exacting demands of the photonics and optics industry every time.

We bring decades of precision machining experience, certified quality systems, and advanced technology to every photonic component we produce.
ISO 13485 and ISO 9001 certified with multi-point inspection processes ensuring every photonic component meets specification.
Founded in 1953 in Brook Park, Ohio, with three generations of precision machining expertise serving critical industries across the United States.
Tolerances down to ±.0002" across Swiss turning, CNC turning, and 5-axis milling—critical for optical alignment and photonic system integrity.
Production-intent prototyping on the same equipment as full production runs means faster scale-up and no re-qualification for photonics customers.
Experienced professionals dedicated to precision, quality, and mission-critical results.

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.
A photonic component is a precision part that generates, manipulates, or detects light within optical and photonic systems. Examples include lens housings, optical mounts, beam splitter assemblies, and fiber optic ferrules. These components require extremely tight dimensional tolerances and superior surface finishes to ensure proper light transmission and system performance.
Speak directly with our precision machining experts for a no-obligation consultation and quote.
Internationally recognized quality management system certification.
Medical device quality management standard, ensuring rigorous process control.
Women's Business Enterprise National Council certification, woman-owned business.
Share your part drawings and requirements with our team. We'll provide a detailed, competitive quote for your photonic component machining needs—no obligation, no delays.
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.