3. Basic Materials For Construction
(a)Bell out one end of a short length of steel pipe to increase the diameter. (b)Sharpen the edge with a file. (c)Push a length of bamboo of sufficiently small diameter into the pipe to act as a handle. (d) Secure this bamboo to the pipe by drilling a small hole through the assembly and inserting a nail in the hole. (e) Bend the nail to fix it into place, making sure it does not stick …
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