Custom CNC Machining Parts: Everything you need to know

CNC machines are very complex, and their uses can vary greatly depending on their application. CNC machines have been integral to the design of many modern manufactured goods, and there are many ways they can be applied to almost any project.

What is CNC Machining?

CNC brass milling

CNC machining is a process used to create high-precision parts. This process typically involves the use of computer-controlled tools, such as lathes and mills, to precisely cut, shape, and drill the material into the desired shape.

What is CNC Machine?

Computer numerical control (CNC) machine tools are a type of automated machine tool. Computers typically control CNC systems and can be found in various industries, including food production and agricultural equipment manufacturing.

The typical CNC machine tool consists of a computer, control electronics, and motors that all work together to perform various tasks. A computer controls the movement of the tool head. The control electronics then move the tool-changing programs, called “G-code,” which tell the machine what to do.

Each letter and number represents a specific type of motion for the tool head. The motor then moves the tool to perform that operation. CNC machines can perform various functions, including drilling, cutting, or welding. They can do many things with incredible precision and accuracy.

The CNC machine tool is one of the most versatile machines ever invented, capable of producing almost anything you can imagine.

This machining uses a computer-controlled machine tool to cut or shape metal, plastic, or other materials. It can also be used to drill holes or polish materials.

The Types Of CNC Machining

The types of CNC machining that can be performed vary greatly and depend on the type of machine being used. The two primary types of CNC machines are vertical and horizontal CNC machines.

#1: Vertical CNC Machines

The vertical CNC machine is the most common type of CNC machine. They are used to cut and shape certain materials, such as metal. These machines are often used to cut steel, aluminum, and plastics. Vertical CNC machines are typically between 30″ to 50″ above the ground. A typical vertical CNC machine can be enormous, as they have to have sufficient room for the computer system, control electronics, and motors. The vertical CNC machine can cut, bore, and mill many materials.

#2: Horizontal CNC Machines

The horizontal CNC machine is also standard, although they are less common than the vertical machine. However, they are more accurate and precise in their cuts. They are typically between 10″ to 30″ below ground level. A horizontal CNC machine typically uses more powerful motors, allowing for higher speeds than the verticle machines can achieve.

#3: Depth CNC machines

The depth CNC machine allows for cutting a wide range of materials. These machines typically use a five-axis system to cut many materials, including plastics and aluminum. The only downside to this type is that it is much more expensive than other types of CNC machines. The depth CNC machine can also be referred to as a five-axis or 3+2 machining center.

Many other types of CNC machining include wire EDM and laser machines. Each machine is designed to tackle a variety of projects, but they are also precise in their application. The processes used in each of these machines are also different. The most common technique is wire EDM machining, which uses a wire to cut through steel or aluminum. The other processes used are laser and waterjet machining.

Custom CNC Machining Services: Materials

#1: Aluminium

This material is used in many industries and applies to a wide range of work. the aluminum can be machined and welded. It is not suitable for heavy-duty machining but more suitable for light-duty machining like drilling, milling, and tapping. The smooth surface of aluminum provides good grinding and polishing effects, while the wide range of usages provides a large variety of applications.

#2: Brass


Brass is very similar to aluminum in terms of machinability. While this material is not completely recyclable, it can be melted and reused. Most people think of brass from the recycling bin, not a machine shop, but this material is just as valuable. It can create practical components, such as lampshades and sandwich panels. The best part about brass is that it can be polished to look brand new with little effort.

Brass is used in many industries and has many properties that allow it to be machined. It feels smooth in the hands, and the shine that can be achieved after finishing the material makes it extremely attractive. The properties of brass also make it ideal for different plating processes.

#3: Steel


Steel is one of the most common materials that you will find in the workshop. It is used in all kinds of custom CNC machining processes and can be used for many things. Steel is strong, durable, and easy to machine. Custom CNC machining services can be performed on steel, including drilling, turning, and milling. The material has a rough, gray surface, making it easy to clean up parts and give them a smooth finish after machining or grinding. Steel is used in various industries, from auto manufacturing to cooking equipment.

#4: Stainless Steel

Stainless Steel

Stainless steel is a non-magnetic alloy that is great for custom CNC machining parts due to its corrosion-resistant properties. It offers more strength and durability than aluminum or steel, making it an ideal choice for high-performance parts.

#5: Copper

CNC Machining Copper

Copper is a soft metal that is ideal for the custom CNC process. Because of its softness can be cut with any tool, but it is commonly used in wire EDM and laser CNC machines.

It has different grades depending on the amount of impurities and oxides it contains, and the higher the impurities, the lower the purity.

#6: Plastic

CNC Machining Plastic

Plastic is an affordable and versatile material that can be used for both prototype and production parts. It’s easy to machine into complex shapes and sizes, making it a great option for custom CNC machining services.

#7: Carbide:

Plastic is an affordable and versatile material that can be used for both prototype and production parts. It’s easy to machine into complex shapes and sizes, making it a great option for custom CNC machining services.

Custom CNC Machining Services: Surface Finishing

#1: Anodizing


Anodizing is a process that creates a coating on the aluminum’s surface to give it various colors. The process can be applied to aluminum or titanium and is used in the automotive industry and for military products. The method uses electrolysis to coat the metal with a layer of anodic oxide. Many different anodizing processes use other dyes, voltage settings, and times. These factors change how deep the color will be and also how thick the coating will be. The color will also vary depending on the thickness and finish of the part.

#2: Painting


the piece is coated with paint instead of creating oxide. The shades of paint used vary between industries and products, but there are a few simple steps you need to follow:

  • Clean the surface thoroughly with IPA or degreaser;
  • apply a primer;
  • follow up with color and clear coat or lacquer depending on what your final shade requires.

#3: Polishing


Polishing is a process carried out on parts that have been rough-milled. It is used to create smooth surfaces, remove waste material, and sometimes burrs. The process can be done manually or by using machines that perform abrasive techniques such as buffing to remove scratches and rough surfaces or spark erosion to remove tiny amounts of material.

#4: Brushing


Brushing is a method of removing dust, grease, and other solids from the surface of parts that have been machined. It is used in complex or inaccessible areas to other cleaning methods. Simple manual brushing can be done by hand or with an airbrush. Many manufacturers use scrubbing mechanics to remove surface contamination as well as heavy contamination that cannot be removed by hand.

#5: Electroplating

Electroplating can be used to add an extra layer of protection and resistance to your parts. This method coats the surface of the part with a thin film of metal, such as zinc or copper, offering additional strength and durability.

#6: Sandblasting

Sand Blast

This process uses abrasive materials, such as sand or glass beads, to remove burrs and other imperfections from the surface of your custom CNC machined parts.

Why choose The CNC Machine factory in China?

If you are looking for custom CNC machining services for a new facility or expanding your workshop, look no further than The CNC Machining Factory in China. They manufacture different machines at CNC Machining Parts factory to make machining simpler and more efficient. Their companies are well known for their quality machines and their prompt service. They offer competitive quotes at competitive prices if you need a new CNC machine or an upgrade.


Gavin Leo is a technical writer at Aria with 8 years of experience in Engineering, He proficient in machining characteristics and surface finish process of various materials. and participated in the development of more than 100complex injection molding and CNC machining projects. He is passionate about sharing his knowledge and experience.