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The image to the left shows a selection of needle files in an assortment of cross sectional shapes. Needle files are small files that are used in applications where the surface finish takes priority over metal removal rates but they are most suited for smaller work pieces. They are often sold in sets, including different shapes.
In 1910, instead of regenerating files, a production of files was launched, managed by the company Gustav Granobs - Fabryka Filników i Narzędzi (File and Tool Factory) which in 1915 was merged into the firm Granobs i Kozłowski. The production then expanded to various tools in addition to the original file item (e.g. shovels, pickaxes and axes).
A sewing needle. A sewing needle, used for hand-sewing, is a long slender tool with a pointed tip at one end and a hole (or eye) to hold the sewing thread.The earliest needles were made of bone or wood; modern needles are manufactured from high carbon steel wire and are nickel- or 18K gold-plated for corrosion resistance.
Hard metal or ceramic workpieces cannot flex beyond the cutting edges, so the tools remove material from them. This characteristic makes burrs suitable for use in dentistry , as the tool will grind the hard enamel of teeth, yet leaves soft mouth tissues unharmed if the tool should unintentionally touch them.
A needle gun has a set of very fine chisels known as needles. The tool forces these needles against a work surface at variable speeds up to around 5,000 times per minute. [3] [2] Different models offer choices of number of needles, operating speed, and power levels. [3] Many models use compressed air, although electrical needle-guns do exist ...
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