CNC Milling
Advanced 3-, 4-, and 5-axis CNC milling for complex tool steel geometries, tight pockets, fine features, and close-tolerance components requiring repeatability and robust inspection.
Source tight-tolerance tool steel components for demanding Tucson, AZ programs with Criterion Precision Machining. We support Southern Arizona aerospace, defense, photonics, and medical manufacturers with 5-axis milling, CNC turning, Swiss turning, Wire EDM, finishing, and certified inspection—built for hardened materials, complex geometries, and “no failure” applications where documentation, repeatability, and precision matter.

Integrated CNC, EDM, finishing, prototyping, and inspection services for demanding tool steel components.
Advanced 3-, 4-, and 5-axis CNC milling for complex tool steel geometries, tight pockets, fine features, and close-tolerance components requiring repeatability and robust inspection.
Precision CNC turning for cylindrical and complex tool steel parts, including multi-tasking live tooling to reduce setups, control tolerance stack-up, and improve production consistency.
High-precision Swiss turning for small-diameter, high-repeatability components with fine micro-features, tight tolerances, and demanding dimensional requirements in regulated applications.
Wire EDM for hardened tool steel features such as sharp internal corners, narrow slots, intricate contours, thin-wall geometry, and burr-free profiles conventional tools may struggle to produce.
Production-intent prototyping using the same equipment, inspection systems, and standards as production, helping qualified tool steel parts transition smoothly into repeat manufacturing.
In-house deburring, edge conditioning, vibratory finishing, high-energy tumbling, laser marking support, and final inspection to streamline tool steel part completion under one quality system.
Tool steel components often demand more than standard machining—they require stable processes, hardened-material expertise, precise inspection, and controlled documentation. Criterion supports Tucson, AZ engineering and procurement teams with advanced CNC, Swiss, EDM, finishing, and quality systems for complex parts used in Southern Arizona aerospace, defense, photonics, and medical programs.

Criterion combines advanced equipment, certified systems, and decades of precision manufacturing experience.
Machining processes support tolerances down to ±0.0002 inches for qualified mission-critical parts.
Serving Tucson-area aerospace and defense buyers with FDA, ITAR, ISO 9001, and ISO 13485 credentials.
5-axis milling, Swiss turning, Wire EDM, finishing, and inspection reduce vendor handoffs.
National support for Southern Arizona manufacturers needing reliable tool steel components and documentation.
Experienced leadership for mission-critical precision machining programs.

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.
Criterion machines demanding materials using CNC milling, CNC turning, Swiss turning, and Wire EDM. While each print is reviewed for material condition and feature requirements, our experience includes hardened steels, stainless steels, titanium, specialty alloys, plastics, and exotic materials. For tool steel components, we evaluate geometry, hardness, tolerances, surface finish, and inspection needs before confirming the best production route.
Share your print and requirements with our machining specialists.
Medical device quality management certification.
Certified quality management for precision machining.
Recognized woman-owned business enterprise membership.
Send drawings, material requirements, tolerances, volumes, and documentation needs. Our team will review manufacturability, quality requirements, and next steps for your tool steel machining program.
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.