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What is chamfer?


Chamfer refers to cutting the corners of the workpiece into a particular slope. Chamfer removes the burrs on the parts due to machining and facilitates the assembly of parts, and chamfer is generally made at the end of the parts. To a certain extent, chamfer will also make the workpiece beautiful.


In the case that the drawing is not clearly marked, the default chamfering angle is 45 degrees, of course, it can also be represented by “C”. For example, if the chamfer on the outer surface is marked as “C2” in the drawing, it also indicates that the chamfer size is “2 x 45°” or “2 x 2”. Among them, “2” represents the length of the chamfer, and “45°” refers to the angle of the chamfer.

Why are there two expressions for “C2”? In fact, there are two ways to express the chamfer itself, one is length x length, and the other is length x angle. For a chamfer of 45 degrees, the section must be an equilateral triangle, so it is possible to express it in both ways.

Usually, we use length x angle to represent the chamfer on the drawing so that the processor can clearly and intuitively understand the size of the chamfer without additional calculations.

There is another way of expression, which is expressed by the length of the slope, that is, Face width chamfers (F.W.). It is enough to understand, and we will not explain too much.

Chamfer VS Fillet

A fillet is a round or radius corner and a chamfer is a straight cut.


Let’s use Welding Nipple as an example: Welding Nipple is made of pipe, and the cutting machine will form burrs on the cutting edge during the cutting process.

For the product itself, one side is an external thread, and the other end is chamfered. This chamfer has many functions, eliminates burrs, makes the workpiece beautiful, facilitates welding and so on. (The chamfer is 35 degrees, and the length will vary according to the size)

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