An automatic cutting liquid supply apparatus which automatically supplies a cutting liquid to each tool of a machine tool in accordance with predetermined optimal cutting liquid supply conditions that include variations over time during operation. In particular, a forward error correction coding rate is adapted for individual channels while at the same time maintaining a fixed block size independent of the FEC coding rate. and does not react with water and also has an oxidation potential of about 4. A tensioning mechanism such as a spool mechanism or a lace keeper is attached to the flexible upper and engages the cord, such that the user can releasably tension the cord. When worn around the waist, it allows 360 degrees of movement by the dog. A correct angle of inclination of a line linking the lowest point on each respective razor blade and the lowest point on the rounded elongated lower member can be easily adjusted to between 20 and 30 degrees to fit the razor blades on the face of the skin for safe shaving of hair.