Prototyping
Production-intent prototyping that bridges design and manufacturing. Test fit, function, and manufacturability with the same precision equipment used for full production runs, ensuring seamless transition from prototype to market.
Transform your manufacturing vision into reality with Criterion Precision Machining's end-to-end custom product development services. From initial prototype to full-scale production, we deliver mission-critical components with tolerances down to ±.0002" for aerospace, medical device, defense, and photonics industries. Our ISO 13485 and ISO 9001 certified facility bridges the gap between concept and commercialization with production-intent prototyping that ensures your designs are manufacturable, compliant, and ready for market.

Complete precision machining solutions from prototype to production for mission-critical manufacturing applications.
Production-intent prototyping that bridges design and manufacturing. Test fit, function, and manufacturability with the same precision equipment used for full production runs, ensuring seamless transition from prototype to market.
Specialized Swiss turning for complex, small-diameter components with tolerances down to ±.0002". Ideal for high-volume production of intricate micro-parts requiring exceptional surface finishes and dimensional accuracy.
Multi-axis CNC milling capabilities including 3-, 4-, and 5-axis machining for complex geometries. Perfect for producing intricate components with tight tolerances and consistent repeatability across production runs.
High-precision CNC turning for cylindrical and complex geometry parts. From micro to medium-sized components, we deliver exceptional surface finishes and tolerances down to ±.0002" in challenging materials.
Certified quality assurance with advanced CMM inspection, OASIS optical measurement systems, and multiple verification points throughout manufacturing. Complete documentation including Certificates of Conformance provided at no additional charge.
Specialized machining capabilities for challenging materials including titanium, stainless steels, aluminum, PEEK, specialty plastics, and advanced alloys. Expert knowledge ensures optimal results for your specific application requirements.

Our engineering team conducts a comprehensive review of your design specifications, assessing manufacturability, material selection, and tolerance requirements. We identify potential challenges early and recommend optimizations that reduce cost while maintaining performance, ensuring your product can be manufactured reliably at scale.
Delivering mission-critical precision components for companies that demand zero-failure performance across aerospace, medical, and defense sectors.
Three generations of precision machining expertise focused exclusively on mission-critical manufacturing applications.
Tolerances down to ±.0002" with advanced multi-axis capabilities including 8-axis Swiss turning and 5-axis CNC milling.
ISO 13485 and ISO 9001 certified with FDA and ITAR registration, ensuring compliance for regulated manufacturing industries.
Seamless transition from prototyping to full-scale manufacturing using the same equipment and quality standards throughout development.
Specialized expertise serving aerospace, medical device, defense, and photonics sectors where component failure is not an option.
Expert leadership guiding precision manufacturing excellence since 1953.

President
As third-generation owner and President of Criterion Precision Machining, Tanya DiSalvo leads a woman-owned manufacturing company that has evolved from its 1953 origins as a general machine shop into a specialized precision machining partner for mission-critical industries. Under her leadership, Criterion has invested strategically in advanced CNC technology, quality systems, and talent to serve the exacting demands of medical device, aerospace, defense, and photonics sectors. Tanya's vision focuses on maintaining the company's legacy of precision while driving continuous innovation in manufacturing capabilities. She has positioned Criterion as a trusted partner for companies that require components with tolerances down to ±.0002" and zero-failure performance. Her commitment to quality, compliance, and customer partnership has earned Criterion ISO 13485 and ISO 9001 certifications, WBENC membership, and FDA and ITAR registration. Tanya's leadership ensures that every component leaving Criterion's Brook Park facility meets the rigorous standards that mission-critical applications demand.

Estimator/Project Manager
Mike Pinchot serves as Estimator and Project Manager at Criterion Precision Machining, bringing critical expertise in translating customer requirements into manufacturable solutions. In his role, Mike conducts feasibility analysis, develops accurate cost estimates, and manages complex precision machining projects from quote through delivery. His deep understanding of Swiss turning, CNC milling, and turning capabilities enables him to guide customers through material selection, tolerance optimization, and manufacturing methodology decisions. Mike works closely with engineering teams to ensure that prototype and production specifications are achievable while meeting performance requirements and budget constraints. His project management approach emphasizes clear communication, realistic timelines, and proactive problem-solving. Mike coordinates cross-functional teams including machining, quality inspection, and logistics to ensure on-time delivery of components that meet exact specifications. His technical knowledge of challenging materials like titanium, stainless steels, and specialty alloys, combined with his understanding of regulatory requirements for medical and aerospace applications, makes him an invaluable resource for customers developing mission-critical products. Mike's commitment to accuracy and accountability ensures projects stay on track from initial estimate through final inspection.

Quality Manager
Kelly Marflak serves as Quality Manager at Criterion Precision Machining, overseeing the certified quality assurance program that ensures every component meets mission-critical standards. Kelly manages Criterion's ISO 13485 and ISO 9001 certified quality systems, implementing rigorous inspection protocols and maintaining compliance with FDA and ITAR requirements. Under her leadership, the quality department utilizes advanced measurement technology including a Global Advantage CMM with PC-DMIS software, OASIS optical inspection systems, and Keyence multi-dimension analyzers capable of measuring up to 99 dimensions on 100 parts simultaneously. Kelly establishes inspection procedures, validates measurement methods, and ensures that documentation meets the stringent requirements of aerospace, medical device, and defense industries. Her approach emphasizes multiple verification points throughout manufacturing, catching potential issues early and preventing defects from reaching customers. Kelly works closely with machining teams to implement statistical process control, conducts root cause analysis when variations occur, and drives continuous improvement initiatives. Her expertise in dimensional metrology, material traceability, and regulatory compliance gives customers confidence that components produced by Criterion will perform reliably in their critical applications. Kelly's dedication to quality excellence reinforces Criterion's reputation as a trusted partner for industries where failure is not an option.
Custom product development is the complete process of designing, engineering, prototyping, and manufacturing unique components or products tailored to specific customer requirements. At Criterion, this includes production-intent prototyping, precision machining, quality verification, and scaling to full production using the same equipment and standards throughout the development cycle.
Talk to our engineering team for expert guidance on manufacturability, material selection, and tolerances.
Medical device quality management system certification
International quality management system standard
Certified woman-owned business enterprise
Share your project specifications and our engineering team will provide expert guidance on manufacturability, material selection, and development timeline. We respond to all inquiries within one business day.
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