FILES
These are manual machining tools that work by tearing away material, like a rasp. Their shape and grain vary and are chosen according to the nature of the operation to be carried out and the profile of the component concerned. Metal files are made of hardened steel. The production process requires delicate operations of profile turning, stamping, cutting, heat treatments and surface treatments. For working particularly hard materials (ceramics, sapphire, glass, etc.), some files are diamond-coated by surface treatment (synthetic polycrystalline diamond deposited by CVD)
Files are used by many practitioners (micromechanics specialists, horologists, bevelers, engravers, enamellers, etc.) for various purposes. They are used to To trim (deburr), to shape components and to decorate.
The grain value of a precision file is generally stamped at the base of the handle. This is a number indicating the number of “teeth” per cm² of the file. Thus, the higher the number, the finer the file.
Flat file and sage leaf file (Steel)
Sapphire file (used to shape the end of pivots)
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