1.Grade of rods. Price varies a lot between different carbide rod grade.
2.Appearance of end mill. Angle of blade, shinny surface, clear laser mark, flat and complete tooth, no burr or crackle, which indicates the carbide end mill is made on a CNC tool machine, also the end mill has a high precision.
3.If the bottom of carbide end mill is completely flat and perfect chamfering, individual package with tag, manufacture name and address or website, it should be quality goods.
If you’re clear about the points mentioned above, you’re ready to choose your carbide end mill.
You can choose Chinese carbide end mill, as cost performance is an important factor of production.