The filing and cutting of hexagram is one of basic training which technical school students should master,its material steps include: examining size by curson callipers,filing Ⅰ side and Ⅱ side coarsely and intensively,filing Ⅳ side and Ⅴ side coarsely and meticulously,filing Ⅵ side coarsely and intensively,intensively examining according to the demand of pattern.This training should carry out after the learning of regular method of processing hexagram,pay attention to enhance sudents′ size computation and ...

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