When it comes to choosing the perfect 120 degree chamfer end mill for your next project, there are a few key factors to consider. From design and cutting performance to tooling material and geometry, learn about all the latest tips and tricks from industry professionals for selecting the best chamfer end mill for the job.
Understand the Different Types of 120 Degree Chamfer End Mills.
There are several types of 120 degree chamfer end mills to choose from. Each type is designed to address different types of tasks, with benefits and downsides specific to application. From single-flute designs for high speed machining, to spiral designs for tougher materials, understanding the fundamentals of each type will ensure you make the right choice for your project.

Consider the Cutting Frame and Insert Geometry.
The cutting frame and insert geometry of a 120 degree chamfer end mill is an important factor to consider when selecting the right tool for your project. For example, some tools come with multiple cutting edges and are designed to cut at higher surface speeds, while others come in single or double flute designs that are better suited for lower speed machining applications. It’s important to take into account the material you’ll be working with and how much engagement you need from the insert in order to make sure you select the right tool for the job.
Examine Application Requirements.
Before you start shopping for a 120 degree chamfer end mill, it’s important to review your application requirements and determine the exact tool you need. This includes understanding the material you’ll be cutting, the depth of cut, surface speed, and any other specific needs of your project. Once this information is available, it will be much easier to select the right chamfer end mill – one that meets all your needs while also offering optimal performance and efficiency.
Evaluate Your Machining Speed, Feed Rate and Depth of Cut Specifications.
The machining speed, feed rate, and depth of cut specifications of your project will all play a role in determining the best 120 degree chamfer end mill for the job. In general, a faster-feed rate will require a tool with a larger diameter, whereas a slower feed rate can accommodate a smaller diameter tool. It’s also important to consider cutting torque requirements as well – if more force is required, then you may need an end mill with increased rake angle or relief angle.
Choose the Right Materials for Your Project.
One of the most important considerations when selecting a 120 degree chamfer end mill is the material it will be used on. Harder materials such as stainless steel, aluminum, and titanium require a tool with greater cutting power. It is recommended to choose an end mill that has a higher level of toughness for harder materials. For softer materials, such as brass and bronze, the selection of an end mill with a lower level of toughness can help create better overall machining results.