Custom Plastic CNC Turning Services

Get custom plastic CNC turning services for tight-tolerance, mission-critical components used in medical device, aerospace, defense, and photonics applications. Criterion Precision Machining combines multi-axis turning, specialty plastic machining experience, in-house inspection, and certified quality systems to produce complex cylindrical parts where dimensional consistency, surface finish, and traceability matter from prototype through production.

Custom plastic CNC turning in progress

Our Custom Plastic CNC Turning Services

Precision turning, inspection, prototyping, finishing, and marking for custom plastic components in critical applications.

CNC Turning

Precision CNC turning for cylindrical and complex plastic components requiring tight tolerances, smooth finishes, live-tooled features, and repeatable production for regulated applications.

Swiss Turning

Swiss turning supports small-diameter, intricate plastic components with micro-features, tight repeatability, and multi-axis machining for demanding medical, aerospace, defense, and photonics programs.

Production Prototyping

Production-intent prototyping helps validate plastic part geometry, tolerances, and performance before scaling into low-to-mid volume or ongoing production programs.

Quality Inspection

Built-in inspection verifies dimensional accuracy using CMM, OASIS optical inspection, Keyence systems, first article reporting, and traceability documentation for critical components.

Mass Finishing

In-house deburring, surface conditioning, vibratory finishing, and light assembly help complete machined plastic parts while reducing outside-vendor handling and lead-time risk.

Laser Marking

Fiber laser marking adds permanent identification, serialization, lot numbers, 2D codes, and traceability marks to selected plastic and machined components.

Technician inspecting CNC turned plastic part

Our Plastic Turning Process

Review Drawings and Material Requirements

Our team reviews your print, CAD data, material requirements, tolerances, inspection expectations, and end-use environment. This early manufacturability review helps identify risks in plastic behavior, feature geometry, surface finish, and production repeatability before programming begins.

Program the Turning Operation

Machine Precision Plastic Components

Inspect and Document Results

Finish, Mark, and Ship

The Criterion Difference

Why Choose Criterion Precision Machining?

Criterion Precision Machining is built for complex parts, demanding buyers, and no-failure applications.

Tight Tolerances

Machining capabilities support tolerances down to ±0.0002 inches for demanding plastic components.

Certified Quality

ISO 13485 and ISO 9001 systems support documented, repeatable production for regulated programs.

In-House Control

CNC turning, Swiss turning, inspection, finishing, and marking reduce outsourced process risk.

Proven Partner

Third-generation, woman-owned leadership brings long-term accountability to mission-critical manufacturing partnerships.

Meet The Criterion Team

Experienced leadership for regulated precision machining programs.

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 is custom plastic CNC turning?

Custom plastic CNC turning is the precision machining of plastic bar stock or blanks into round, cylindrical, or complex components using computer-controlled turning centers. It is ideal for parts requiring tight diameters, concentricity, smooth finishes, grooves, threads, bores, or live-tooled features. Criterion supports specialty plastics alongside metals for regulated, mission-critical applications.

What plastics can be used for CNC turned parts?

How tight can tolerances be on plastic turned components?

Can Criterion produce prototypes before full production?

How are plastic CNC turned parts inspected?

What industries use custom plastic CNC turning services?

How long does a custom plastic turning project take?

Can finishing and marking be included with turned plastic parts?

Need Help With Specifications?

Send your drawings and requirements for a technical review.

Certified & Trusted

Awards and Recognition

ISO 13485 certification logo

ISO 13485

Medical device quality management certification

ISO 9001 certification logo

ISO 9001

Certified quality management system standard

FDA and ITAR registered badge

FDA & ITAR Registered

Registered for regulated production programs

Start Your Plastic Turning Project

Share your drawings, materials, tolerances, and production goals. Our team will review your plastic turning requirements and respond with practical next steps.

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.