Carbide burrs, also referred to as carbide rotary burrs are widely-used with high-speed electric mills or die grinders to process metal, wood, plastics, etc. Carbide rotary burrs are traditionally used in machinery, automobile, shipbuilding, chemical industry, craft carving, as well as other industries. Choosing the right carbide burr for your project is important. There are several options for selecting a high-quality tungsten carbide rotary burr.

Shapes of tungsten carbide rotary burrs
The shape with the carbide rotary burr needs to be based on the form of the workpiece. When processing the internal arc surface, a semi-circular burr or round burr (small diameter workpiece) needs to be used; when processing the interior corner surface, triangular burrs must be selected; when processing the inner right angle surface, a set burr and square burr might be selected. In the event the flat burr is utilized to cut the inner right angle surface, it is necessary to create a narrow surface (smooth edge) without teeth all-around one of the inner right angle surfaces, in an attempt to avoid damaging the best angle surface.

Tooth thickness of carbide rotary burrs
The thickness of burr teeth needs to be determined based on the allowance height and width of the workpiece, machining accuracy, and material properties. The coarse tooth carbide burr is acceptable for machining workpieces with large allowance, low dimensional accuracy, large form and position tolerance, large surface roughness value, and soft material; otherwise, fine-tooth carbide burr must be selected. When used, it ought to be chosen in accordance with machining allowance, dimensional accuracy, and surface roughness needed by the workpiece.

Sizes of carbide burrs
The size and specification of cemented carbide rotary burr ought to be selected in line with the sized the workpiece and machining allowance. If the machining size is large and the allowance is big, cemented carbide rotary burr with a large size must be selected, or perhaps a tungsten carbide rotary burr having a small size must be selected instead.
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