Carbide burrs, also called carbide rotary burrs are utilized with high-speed electric mills or die grinders to process metal, wood, plastics, etc. Carbide rotary burrs are popular in machinery, automobile, shipbuilding, chemical industry, craft carving, and other industries. Choosing the proper carbide burr for the project is essential. There are several means of deciding on a high-quality tungsten carbide rotary burr.

Shapes of tungsten carbide rotary burrs
The form in the carbide rotary burr ought to be based on the design with the workpiece. When processing the interior arc surface, a semi-circular burr or round burr (small diameter workpiece) should be used; when processing the interior corner surface, triangular burrs must be selected; when processing the inner right angle surface, an appartment burr and square burr may be selected. In the event the flat burr is employed to chop 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 correct angle surface.

Tooth thickness of carbide rotary burrs
The thickness of burr teeth ought to be determined in accordance with the allowance sized 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 according to machining allowance, dimensional accuracy, and surface roughness required by the workpiece.

Sizes of carbide burrs
The size and specification of cemented carbide rotary burr must be selected based on the size of the workpiece and machining allowance. In the event the machining dimension is large along with the allowance is large, cemented carbide rotary burr using a large size must be selected, or a tungsten carbide rotary burr with a small size should be selected instead.
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