Computer Numerical Control (CNC) machining is a manufacturing process that uses pre-programmed computer software to control the movement of factory machinery and tools. It can be used to control a range of complex machinery, from grinders and lathes to mills and routers. This article explores the world of CNC machined parts (components) manufacturers. Let’s learn more about CNC machining processes, materials, and applications.

1. Understanding CNC machining processes

CNC milling

In CNC milling, the workpiece is held stationary while the cutting tool rotates on its axis. The computer instructions guide the milling machine to move in multiple directions to shape the material. This process can create a variety of features on a part by cutting away unwanted material, making it an incredibly versatile and widely used CNC process. So, this is an essential capability for a custom CNC machining supplier.

CNC turning 

CNC turning, on the other hand, involves the rotation of the workpiece while the cutting tool moves in a linear fashion. It is typically done on a lathe and allows for precise control over creating symmetrical parts such as cones and cylinders. Turning is also very frequently used for CNC machining parts manufacturers.

CNC drilling

Drilling is a CNC process where a computer-controlled machine uses rotating multipoint or single-point cutting tools to remove material and create round holes in the workpiece. CNC machined components manufacturers often use this technique for its precision and efficiency in creating holes of various depths and diameters.

CNC grinding

Grinding in CNC involves using an abrasive wheel as the cutting tool. The grain particles on the wheel surface cut small chips from the workpiece, resulting in a fine finish. This process is typically used for finishing parts that require smooth surfaces and high precision.

CNC cutting

The CNC cutting process involves various techniques such as laser, plasma, and waterjet cutting to shape the workpiece. Laser cutting uses a high-power laser to melt or vaporize materials, plasma cutting uses a plasma torch to cut conductive materials, and waterjet cutting uses high-pressure water. These methods provide precise and efficient cutting, making them essential in various industries.

Understanding these CNC machining processes is crucial for manufacturers to select the most appropriate method for their production needs. Each process offers unique benefits and is suited to specific applications, contributing to the versatility and efficiency of CNC machining in modern manufacturing.

2. Materials used by custom CNC machining suppliers

Custom CNC machining suppliers use various materials to cater to the diverse needs of different industries. The most widely employed materials are metals and plastics, each offering unique properties that make them suitable for specific applications.


1) Aluminum

Aluminum, especially aluminum alloy 6061, is one of the most commonly used metals in CNC machining due to its excellent machinability, lightweight, and good thermal and electrical conductivity. It is ideal for applications that require strength without a significant increase in weight, such as automotive and aerospace components.

2) Stainless steel

Stainless steel is another popular choice due to its high strength, corrosion resistance, and excellent heat resistance. It is commonly used in the medical, food processing, and aerospace industries.

3) Brass

Brass is known for its ease of machining, good strength, and excellent corrosion resistance. It is often used in applications with low friction requirements, such as gears, bearings, and valves.

4) Copper

Copper is highly conductive, both thermally and electrically, making it ideal for electrical components. It also offers good corrosion resistance and is commonly used in the electronics industry.


1) ABS

Acrylonitrile Butadiene Styrene (ABS) is the most common plastic used in CNC machining due to its high impact resistance, good machinability, and excellent dimensional stability. It is widely used in the automotive industry and for creating prototypes.

2) PC

Polycarbonate (PC) is a strong plastic that offers excellent impact resistance and transparency. It is often used in applications that require durability and clarity, such as protective covers and eyewear.


Poly(methyl methacrylate), also known as acrylic, is another transparent plastic that is often used as a glass substitute due to its excellent clarity and weather resistance. It is commonly used in signage, lighting fixtures, and displays. CNC machined parts or components manufacturers are usually asked about the difference between PC and PMMA. For better transparency, PMMA is the top choice. Read this blog to learn more.

4) POM

Polyoxymethylene (POM), also known as acetal, is a plastic with high strength, rigidity, and excellent machinability. It is often used in precision parts that require high stiffness and low friction.

5) PA

Polyamide (PA), or nylon, is a strong, wear-resistant plastic that also has good thermal and chemical resistance. It is commonly used in the automotive industry and for manufacturing gears and bearings.

The choice of material in CNC machining depends on the specific requirements of the part, including its mechanical properties, aesthetic considerations, and the environment in which it will be used. CNC machining parts manufacturers have the expertise to guide clients in selecting the best material for their specific needs.

3. What parts can be made on CNC machines?

CNC machines are incredibly versatile and can be used to manufacture a wide range of parts across various industries no matter for prototypes, low-volume, or high-volume productions.

Automotive parts

CNC machines are used in the automotive industry to produce complex and high-precision parts such as engine components, gearboxes, steering systems, brake systems, and various other parts.


Aerospace components

The aerospace industry relies heavily on CNC machining for the production of parts that require a high level of precision and consistency, such as turbine parts, engine parts, structural components, and more.

Medical devices

In the medical field, CNC machines are used to manufacture surgical instruments, orthotic devices, prosthetics, dental implants, and other equipment requiring high precision. CNC machining is also ideal for the small-batch production of medical devices.


The precision and repeatability of CNC machines make them ideal for making electronic components such as casings, heat sinks, and connectors.

Industrial machinery

CNC machining is used to create parts for various types of machinery, including hydraulic components, fasteners, shafts, and many others.

Custom Components

CNC machines can also produce custom parts for a wide range of applications. These can include anything from custom gears and tooling to architectural pieces and art installations.


In the jewelry industry, CNC machines are used to create intricate designs with high precision.


Marine industry

Parts such as propellers, engine components, and other marine hardware are often manufactured using CNC machines with marine-grade materials.

Generally, the vast majority of components that require precise and repeatable machining can be made on a CNC machine. CNC machining is increasingly popular in manufacturing for a wide range of industries because of its high efficiency, accuracy, and consistency.

About X Rapid Technologies

As one of the CNC machining parts manufacturers, X Rapid Technologies offers a full range of CNC machining services from cutting, milling, turning to grinding, and more. We are happy to offer you bits of advice with our industry expertise. Contact us today!