Precision Machine Shop Services in Indiana

Indiana's advanced manufacturing sector demands components with zero margin for error. Criterion Precision Machining delivers tight-tolerance CNC milling, turning, and Swiss turning for medical device, aerospace, defense, and photonics industries. With over 70 years of precision expertise and ISO-certified quality systems, we're the partner Indiana manufacturers trust when failure is not an option.

Precision machine shop CNC machining center producing tight-tolerance components for aerospace and medical industries

Our Precision Machine Shop Services

Comprehensive precision machining solutions for mission-critical industries requiring exacting tolerances and certified quality.

CNC Milling

Precision 3-, 4-, and 5-axis CNC milling for complex, multi-axis components with tight tolerances and consistent repeatability, serving medical device, aerospace, and defense applications.

CNC Turning

High-precision CNC turning for cylindrical and complex geometry parts with tolerances down to ±.0002", using 2-axis and 6-axis multi-tasking turning centers with live tooling.

Swiss Turning

Swiss turning for small-diameter, intricate components with micro-features down to .010" diameter, ideal for high-volume medical, aerospace, and photonics production runs.

Prototyping

Production-intent prototyping using the same machines and standards as full production orders, enabling direct scale-up for medical devices, aerospace components, and optical systems.

Quality Inspection

Multi-point precision inspection with Global Advantage CMM, OASIS optical inspection, and Keyence systems measuring up to 99 dimensions on 100 parts simultaneously.

Material Expertise

Skilled machining of titanium, stainless steels, aluminum, PEEK, specialty plastics, and high-performance alloys demanded by medical, defense, and photonics manufacturers.

Zero Tolerance for Failure

Mission-Critical Precision Machining for Indiana's Advanced Industries

Indiana's robust manufacturing corridor — from automotive to aerospace — requires precision parts built to perform under real-world stress. Criterion Precision Machining brings over 70 years of heritage and ISO 13485 and ISO 9001 certified processes to every order. Whether you need Swiss-turned micro-components, 5-axis milled housings, or production-intent prototypes, we hold tolerances down to ±.0002" with full traceability, CoC documentation, and SPC-driven quality — so your critical assemblies never fail.

Close-up of precision machined aerospace and medical components with tight tolerances on an inspection surface plate
The Criterion Difference

Why Choose Criterion Precision Machining?

From our ISO-certified quality systems to our 70-year legacy, here's what sets Criterion apart for Indiana manufacturers.

ISO-Certified Quality

ISO 13485 and ISO 9001 certified processes ensure every component meets the strictest medical and industrial quality standards.

70+ Years of Expertise

Founded in 1953, our decades of precision machining heritage means Indiana manufacturers get a proven, trusted partner for complex parts.

Advanced Inspection Technology

Our CMM, OASIS optical system, and Keyence multi-dimension tools provide full traceability with no-charge CoC documentation on every order.

No-Failure Industries Focus

Specialized exclusively in medical device, aerospace, defense, and photonics — sectors where zero defects are non-negotiable for Indiana OEMs.

Meet the Criterion Team

Experienced professionals dedicated to precision, quality, and your mission-critical success.

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 industries does Criterion Precision Machining serve in Indiana?

Criterion specializes in precision machining for medical device, aerospace, defense, and photonics/optics industries — sectors where failure is not an option. We serve OEMs and manufacturers throughout Indiana and across the United States.

What tolerances can Criterion hold on precision machined parts?

Is Criterion Precision Machining ISO certified?

What materials does Criterion machine?

Does Criterion offer prototyping services before full production?

What quality inspection capabilities does Criterion have?

Can Criterion Precision Machining handle small or micro-sized components?

How do I get a quote for precision machining services in Indiana?

Still Have Questions About Our Machining Capabilities?

Speak with our engineering and estimating team for answers tailored to your specific component needs.

Certified & Trusted

Awards and Recognition

ISO 13485 certification badge for Criterion Precision Machining

ISO 13485 Certified

International standard for medical device quality management systems.

ISO 9001 certification badge for Criterion Precision Machining

ISO 9001 Certified

Global benchmark for quality management and consistent process excellence.

WBENC Women's Business Enterprise certification badge

WBENC Certified

Women's Business Enterprise National Council certified woman-owned business.

Get a Precision Machining Quote for Your Indiana Project

Share your part drawings, tolerances, and material requirements. Our estimating team will respond promptly with a detailed, competitive quote tailored to your mission-critical application.

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.