When you are looking to manufacture complicated parts, CNC milling is one of the leading processes that you will come across. Why complicated? While other fabrication methods like plasma or laser cutting will undoubtedly get you similar results and cost you less, it is essential to note that they do not guarantee anything similar to the abilities that you get from CNC milling.

Thus, you are going to take an in-depth dive into CNC milling, looking at what it is, the importance of using it to mill your projects, how CNC milling machines operate, as well as the type of industries suitable for it. Read on to find out much about this milling process.

What is CNC Milling?

CNC milling, also known as computer numerical control milling, is typically a machine process that utilises rotating multipoint cutting tools as well as computerised controls to gradually remove material from a workpiece and create a custom-made product or part. This procedure is ideal for designing a wide range of materials from metal and plastics to wood and glass. It is also suitable for creating any customised product or part.

Various abilities are possible under the umbrella of precise CNC milling services, including chemical, mechanical thermal, and electrical processes. CNC milling is also a mechanical machining procedure along with turning, drilling, and several other machining procedures. What this means is that a material is detached from the workpiece through mechanical means like the activities of the cutting tools of the milling machine.

Besides, the CNC milling process follows similar basic production stages contained in CNC machining procedures. They include:

  1. Design of a CAD (Computer-aided design) model

  2. Converting a CAD model into a perfect CNC program
  3. Configuring the CNC milling machine
  4. Execution of the milling operation

Put merely, CNC milling procedure starts with the design of a 2D or even 3D CAD part design. Afterwards, the completed design is taken into a CNC-compatible file format and then converted to a CNC machine program by a CAM (Computer-aided manufacturing) software. The main task of this program is to dictate the movements of the tooling and activities of the machine all through the workpiece.

So, if these terms are still confusing you, it would be wise to make it easier for you to understand them much better. Well, CNC milling can be defined as a subtractive fabrication process that utilises computerised numerical controls systems for process automation.

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Why use CNC Milling for Your Project?

By now, you already know the precision and accuracy that CNC milling guarantees, but this’s only the start when it comes to why you need to use CNC milling in your project. Here are some of the reasons to use CNC milling in your projects.

It Eradicates the Essence of Producing Prototypes

Prototypes not only take your time to design and develop, but they also cost a lot of money when it comes to production. By using the CNC milling machine, you already have both digital copies of the product and machine. With this, there’s no need to design costly and time-consuming prototypes. In the end, you save a lot of time that you can use in other areas.

It lowers the Production Cost

Another reason to use CNC milling is that it significantly decreases the production cost. First, you only need negligible labour when it comes to operating the CNC machine. It only requires a one trained person to monitor its output, unlike the conventional machinery that demands highly skilled staff to manage every machine. The high speed, accuracy, and precision also help in lowering the cost.

It Leads to Creation of Quality Parts

In the sections above, you have seen how CNC machine enhances accuracy and consistency in components. The reason for this is that the machine can undertake similar tasks in the same precise way endlessly without experiencing injury or tiring. Notably, even the most cautious human produces minor variations and inconsistencies in the quality of products.

How do CNC Milling Machines Work?

As stated earlier, most CNC milling machinery runs on particular software programs. They typically utilise CAM (Computer Aided Machining). Computer-Aided Machining program is a system that designs NC (Numerical Control) codes and tool paths. These paths are usually founded on 3D computer models. It is essential to note that the CAM software does not operate the CNC milling machine. Instead, the CAM creates a path followed by the machine. CAM programming needs skills and knowledge for operating the machines. While there’re simple programs that novice can use to run the CNC machinery, it is always advisable to recognise how NC codes run.

For example, the CNC milling machinery can operate simply. In this scenario, the NC code has to be quite simple for the machinery to execute the commands. G-Code, or ISO Code, is the most commonly used NC language. The good thing about this language is that it’s adaptable to various machinery. The CNC software typically uses a 3D design to create a useful tool path. As a rule, it would be wise to use a fast CNC milling machine. When generating a tool path, always use an automated feed system. You can opt to edit or simulate tool paths, on the other hand, until you acquire satisfactory results.

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What Type of Industries uses CNC Milling?

All type of industries requires precisely machined components with reliable consistency. Many businesses utilise the CNC milling machine for their metal fabrications. Some of these industries include:


All industries require precision, but it is particularly essential when it comes to aircraft travel parts like the aircraft turbine engine, for instance. Air travel for both goods and humans couldn’t be dependable and safe if there were no precise parts.


From horticulture operations and large-scale farming to agriculture machinery manufacturers, CNC milling covers the requirements of the agricultural industry. These operations need dependability and high production on all components.


Think about the gears, shafts, brackets, pins, and other useful parts used on cars of all styles and sizes. From military to customised auto cars, CNC milling makes it easier to produce both small and large parts needed in the automotive industry.


The equipment and tools utilised in construction basically use CNC machining. It is indeed part and parcel of most building procedures by nature of the stone, wood, screws, nails, as well as other items utilised to design a specific structure.


Dental implants demand CNC machining to be just precisely the ideal shape. In addition to the surgically implanted items, they’re also the tools used by the medics and the assistants. CNC machining certainly puts everything to the appropriate point and angle.

Other industries that use CNC Milling include electrical, food and beverage, equipment, firearms, military, jewellery, printing, manufacturing transportation, among many others.




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