Demystifying CNC Inserts: An Introduction to Cutting Tool Technology


Machining is a complex process that involves cutting, shaping and forming materials into precise parts and components. The accuracy and precision of the finished product depend largely on the quality of the cutting tools used. One type of cutting tool that has gained popularity in recent years is the CNC insert. This blog post will provide an introduction to CNC inserts and demystify their use in cutting tool technology.

What are CNC Inserts?

CNC inserts are small cutting tools that are designed to be inserted into a CNC machine. They are made from various materials such as carbide, ceramic, and diamond. They are available in different shapes and sizes to suit different machining needs. CNC inserts are designed to be easily replaceable, making them a cost-effective option for machining.

CNC inserts come in two types - indexable and solid. Indexable inserts are designed to be easily rotated or replaced when worn out. Solid inserts, on the other hand, cannot be replaced or rotated, and must be sharpened or reground when they become dull.

How do CNC Inserts Work?

CNC inserts work by cutting through material using a rotating motion. The insert is mounted onto a tool holder, which is then inserted into the CNC machine. Once the machine is turned on, the tool holder rotates at high speeds, causing the CNC insert to cut through the material. The shape and size of the CNC insert determine the type of cut that it can make.

CNC inserts are designed to be used with specific materials, such as aluminum, stainless steel, and titanium. The type of material being cut determines the shape, size, and material of the insert that is used. CNC inserts can be used for a variety of applications, including turning, milling, drilling, and threading.

Advantages of CNC Inserts

CNC inserts offer several advantages over traditional cutting tools. Firstly, they are much more cost-effective as they can be easily replaced when worn out. This means that machining businesses can save money in the long run by not having to constantly replace entire cutting tools. Secondly, CNC inserts are designed to be more precise than traditional cutting tools, allowing for more accurate cuts and better part quality. Finally, CNC inserts are available in a wide range of shapes and sizes, making them suitable for a variety of machining needs.

Another advantage of CNC inserts is their versatility. They can be used for a variety of applications, from roughing to finishing. They can also be used with different materials and in different machining processes, making them a versatile tool in any machining shop.


CNC inserts are an important part of cutting tool technology and have revolutionized the machining industry. These small cutting tools offer several advantages over traditional cutting tools, such as cost-effectiveness, precision, and versatility. By understanding the basics of CNC inserts, machining businesses can improve their processes and achieve better part quality. The use of CNC inserts is becoming increasingly popular, and for good reason - they are an investment that can pay off in the long run.