Carbide Rotary Burr

Carbide Rotary Burr

Miniature Cutters: an Ideal Rotary Tool Used for Engraving & Carving

Miniature cutters are used with hand held rotary tools and is used for shaping, hollowing, grooving, slotting and for making tapered holes. This high speed miniature cutter is made using the combination of top quality steel burrs to which a durable gold-colored titanium nitride coating is applied. These cutters are manufactured by a vaporized vacuum process at extreme heat just increases the efficiency of the cutter that also protects and extends the life of the tool. This miniature cutter is ideal for wood, metal and plastic. It is used for engraving and carving many materials where the job is small and larger tools are clumsy to use. In these situations miniature cutter is the best possible option.

Carbide miniature cutters have more durability than steel cutters and are best for hardened steel, cast iron, non-ferrous metal and other hard materials. Miniature cutters manufactured from high speed steel do not have the strength of carbide hence they become dull more quickly than carbide tools. On the other hand, high speed steel miniature cutters are not as brittle as carbide, and thus it proves to be the best choice while making deep, fine cuts in metal. Miniature cutters are available in various sizes and shapes and it falls into two main categories, conical and parallel. Conical cutters are known for producing "vee" shaped and flat bottomed cut and have an angled cutting edge whereas parallel cutters produces cut with straight walls and flat bottom and have a single cutting edge. The cutting speed of miniature cutter is actually the measure of the distance traveled in surface feet per minute by the cutting edge and varies proportionally with its tip size.

One of the important aspects associated with miniature cutters is the various angles, which plays an important role in the performance of the cutter. The Clearance angle is the angle of the cutting edge in respect to the face of the miniature cutter. Clearance angle is determined by the material property that has to be engraved. Softer material require larger clearance angle than that needed for harder material. Cutting angle is the angle formed between the miniature cutter's axis of rotation and its cutting edge, which also determines the shape of the cut. Higher cutting angles are used to produce stronger tools and broader cuts and are recommended for harder materials. The standard cutting angle for most of the materials and applications is 30°. For harder materials 40° angle is recommended and for extremely fine or delicate work in soft materials 20° angle is the best.

About the Author

Gyros Tools has been an industry leader in Miniature precision tools, Miniature Accessories and other rotary tools. Here you can also find Miniature Cutters that are useful for shaping, hollowing, grooving in wood, plastic and soft metals.

removal of welding burs with tungsten carbide rotary burs