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What Does It Take To Build A CNC Machine?

There are thousands of products and services that we use every day that were created by robots. Industrial robots work in factories, research labs, and clean rooms to do repetitive tasks that humans can’t or won’t do. But the industrial robot is not what makes this list so unique.

How to Build a CNC Machine?

In the last decade, a new kind of robot has been developed. The CNC machine is a computer-controlled tool that can create things by itself. A CNC machine uses three major components:

Control Computer

The control computer controls the movements of all the axes and sends instructions to motors and other devices for cutting or moving materials. This is also where you would program your designs before they are made on CAD software like Auto CAD or Solid Works.


The motor is the part of the machine that moves a tool or cutting device to cut things, and it also moves other parts in the machine. The higher power motors are more powerful and faster than lower-powered ones. The main advantage of high-powered motors is they can handle greater speeds without overheating. In some cases you may need a specific kind of material for your CNC machining operation so if you are cutting harder materials like steel or aluminum, you may need a higher-powered motor.

Power Supply

The power supply is the electrical source that provides power to the machine for all its components. It can be an AC/DC transformer or battery pack. The more powerful your machine is, the more important it is to have enough current and voltage to keep everything running smoothly. If you are building a CNC router, you would need at least a 120V power supply.

If you are building a CNC milling machine, then the power supply would be higher than that.

Spindle and Chuck

The spindle is what rotates around to cut your material. It may also move other components in the machine such as axes, shafts, or ballscrews. The chuck holds various tools and accessories like drill bits, chucks for turning knobs or fasteners. You can find out more about different types of chucks here.

What Are the Benefits of Using a CNC Machine?

Here are some of the benefits that you can expect from using a CNC machine:

More precision and accuracy

It is much easier to get consistent results when you use a CNC machine. Even if your components don’t fit perfectly, they will still be within tolerances because all movements are programmed by a computer. The parts may need to be tweaked manually afterward but this shouldn’t be too difficult for most people.

Less risk involved

Using a CNC machine will eliminate the risk of damaging your workpiece and will also help you to produce better results. This is because it is easier to program accurate movements in advance so that everything works smoothly when you start working on your project.

It is faster

With a CNC machine, there is no need for hand-tweaking or any other manual adjustments. All the motions are programmed into the computer by using G-Code. This means that you will be able to cut faster and more accurately.

Lower cost

A CNC machine is much cheaper than a manual milling machine. This is because it does not require as many components such as bearings, pulleys, etc. Furthermore, the cutting tool (tool head) for your CNC machine is usually pre-made and can be purchased at a lower price compared to buying one individually from the manufacturer of your machine.


To build a CNC machine, you need to understand the components and what they do. We hope this blog helped you understand how it works. If you have any questions, please feel free to ask us in the comments below.