Plastics
A variety of different types of plastic materials can be used in CNC machining, depending on the application.
PET
Polyethylene terephthalate, or PET, is a type of plastic that is widely used in food and beverage packaging as well as in the manufacturing of medical devices and electronics.
PET is an ideal material for CNC machining due to its high strength and stiffness, as well as its resistance to impact and wear.
It can be easily machined to very tight tolerances, making it an ideal choice for applications where precision is critical.
While PET is not the cheapest option for CNC machining, its superior properties make it an excellent choice for many applications.
Nylon
When it comes to CNC plastic machining, nylon is a popular choice. Nylon is strong and durable, yet lightweight and easy to work with.
It also has a high melting point, making it ideal for use in high temperature applications. In addition, nylon is resistant to abrasion and chemicals, so it won’t break down easily over time.
As a result, parts made from nylon are often more reliable and longer-lasting than those made from other materials. Nylon is also an excellent electrical insulator, making it ideal for use in electronic components. OMIT
PEEK
Polyetheretherketone, or PEEK, is a semi-crystalline thermoplastic that offers a unique combination of properties, including excellent mechanical and chemical resistance.
It is strong and stiff, with a high melting point and is resistant to heat, chemicals, and wear. For these reasons, PEEK is often used in aerospace and medical applications.
PEEK is well suited to plastic CNC machining and can be machined using CNC technology to create precise parts with very minimal variation as it has a low coefficient of friction and high wear resistance.
Acetal
Acetal is a strong, lightweight plastic that is often used in CNC machining. It is easy to machine and has a low coefficient of friction, making it ideal for applications where high precision and smooth operation are required.
Acetal has excellent wear resistance and chemical resistance, making it a good choice for parts that will be exposed to harsh conditions.
It can also be easily joined using adhesive or welding, which makes it possible to create complex shapes and designs.
PTFE
PTFE, or polytetrafluoroethylene, is a type of plastic that is known for being strong and durable. It is often used in applications where high temperatures are a concern, as it has a high melting point.
PTFE is also very resistant to chemical attack, making it a popular choice for use in chemical processing plants.
In addition, PTFE is non-stick, making it an ideal material for use in cookware and other applications where sticking and build-up are a concern.
PTFE is a versatile material that can be used in a wide variety of applications that require strength, durability, and resistance to high temperatures or corrosive chemicals.
Please refer to this list of specific plastics that can be used in the CNC lab.