| 摘要 |
PROBLEM TO BE SOLVED: To provide a file apparatus for a circular saw for easily performing polishing work for a polishing angle of an edge of the circular saw suitable for a material to be cut only by a single cylindrical file. SOLUTION: This file apparatus for the circular is joined by two pieces at intervals in a place usable in common even if the polishing angle of the edge of the circular saw is different in a polishable position of 12 by joining one side 2 of a triangular bar-shaped grooved bar 1 and a pipe 4 and a polisable position of 13 by joining the other side 3 and the pipe 4.
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