Topic To manipulate furthermore to move and it returns too easily and difficulty due to it offers the Nanjing ball blind which can cancel the trouble.SolutionsAs the stopper channel 4 concave facilities is formed in the intermediate section of the phase opposed face of the bamboo hi 2 which it adjoins, making the destal 4of a the stopper channel engage, it joins bamboo hi mutual it adjoins with cup thread 3. The bamboo hi, we are joined loosely between mutual that interval s is formed, by the cup thread, the bamboo hi has been likely to slide mutually. Choice figure Drawing 5
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