Custom PET
CNC Machining Service

Precision PET CNC machining for durable, lightweight, and impact-resistant parts. Our advanced capabilities and skilled engineers ensure high-quality results that meet your exact specifications.

Order Your Parts
pet cnc machining
what is pet cnc machining

PET in CNC Machining

Polyethylene Terephthalate (PET) is an engineering plastic known for its excellent mechanical properties, chemical resistance, and dimensional stability. Its unique characteristics make it an ideal choice for various CNC machining applications across multiple industries. PET’s strength and durability, combined with its ease of machining, allow for the production of precise and complex components.

Price:$$
Available PET at RapidDirect:PET Black, PET White, PET+GF30 Black, PET+GF30 White
Lead Time:< 10 days
Wall Thickness:Minimum of 0.5 mm
Tolerances:±0.005″ (±0.125mm)
Max Part Size:1200 x 500 x 150 mm
Applications:Gears, bearings, insulators, and structural components

Machined PET Properties

Ideal for a variety of applications, PET material offers durability and reliability. Explore the key properties of this material for CNC machining.

Tensile Strength, Yield (MPa)Elongation at Break (%)Hardness (Rockwell R)Heat Deflection Temperature (°C)Density (g/cm³)
80 - 902 - 311070 - 801.38 - 1.40
single material img 4
single material img 5
single material img 6
single material img 7

Surface Finishing Options for PET

At RapidDirect, we provide a wide range of surface finishing options to enhance the appearance and performance of your custom machined PET parts. Our finishes ensure your components meet aesthetic and functional requirements.

As machined  
PET surfaces come out smooth and clean directly from machining, making it ideal for many applications.
Sand Blasting
Provides a matte or frosted texture but should be applied carefully to avoid weakening the material.
Tumbling
Effective for deburring and smoothing edges, giving PET parts a polished look suitable for aesthetics.
Teflon Coating
Can be used for applications requiring low friction or non-stick properties, though it requires surface preparation for adhesion.
Electroless Plating
With a primer, this can add a metallic finish, useful for specific requirements like conductivity or shielding.
Painting
PET accepts paint well, making it an excellent choice for adding color or protective coatings with proper surface prep.

Pros and Cons of
PET CNC Machining

Understanding the benefits and limitations of PET in CNC machining can help you make informed decisions about your projects. Here, we explore both sides to give you a clear picture.

Pros

  • High Strength-to-Weight Ratio: PET offers excellent mechanical strength while remaining lightweight, making it suitable for demanding applications.
  • Chemical Resistance: Resistant to a wide range of chemicals, PET is ideal for environments exposed to harsh substances.
  • Dimensional Stability: PET maintains its shape and size under varying environmental conditions, ensuring consistent performance.
  • Ease of Machining: It machines easily, allowing for intricate designs and precise tolerances.
  • Cost-Effective: PET is relatively inexpensive compared to other engineering plastics, offering a cost-effective solution without sacrificing quality.

Cons

  • Thermal Limitations: PET has a lower heat deflection temperature compared to some other engineering plastics, which can limit its use in high-temperature applications.
  • Brittleness: While strong, PET can be more brittle than other plastics, potentially leading to cracking under high stress or impact.
  • Moisture Absorption: PET can absorb moisture from the environment, which may affect its mechanical properties and dimensional stability over time.

CNC Machining Resources

cnc machining defects
CNC Machining

CNC Machining Defects: Types、 Root Causes & Prevention

Identifying and resolving the root causes of CNC machining defects is critical for maintaining component consistency from prototype to pilot...
May 8, 2026
Read More
Image Description
CNC Machining

Rubber Injection Molding & Mold Design: The Ultimate Engineering Guide

For senior mechanical engineers, product designers, and MedTech sourcing managers, specifying elastomeric components requires a fundamental paradigm shift from rigid...
April 23, 2026
Read More
cnc milling cost guide cover
CNC Machining

CNC Milling Cost: Simple vs. Complex Parts Price Comparison

Estimating CNC milling cost is not about waiting for quotes—it comes down to a few controllable variables: material, machining time,...
April 16, 2026
Read More

FAQs

Our CNC machining services for PET include milling, turning, drilling, and 5-axis CNC machining. We employ advanced CNC machines to deliver high-precision parts with tight tolerances and complex geometries. Each service is tailored to meet specific project requirements, ensuring optimal performance and quality for your PET components.

CNC machined PET parts are widely used in various industries due to PET’s unique properties. In the automotive industry, PET is used for manufacturing gears, bearings, and interior components. The electronics industry utilizes PET for insulators and structural components. In the medical field, PET’s chemical resistance and durability make it suitable for producing medical devices and diagnostic equipment. Additionally, the packaging industry benefits from PET’s strength and stability in creating high-quality, reliable packaging solutions.

Try RapidDirect
now, for free
Start Free Quote
Book a meeting with RapidDirect
Note: Our working hours are 10:00-12:00, 14:00-18:30, and 20:00-23:00. We will confirm the time and meeting method with you via email.
Drag & Drop Files, Choose Files to Upload You can upload up to 50 files.