| 摘要 |
<p>A constructional model comprises a multiplicity of straws, wherein at least some straws are joined together with a first straw extending through a second straw via a pair of transversely aligned holes in the second straw, each of said holes being surrounded by portions of the second straw and the first straw fitting tightly within the holes in the second straw. In a preferred feature at least some straws are joined longitudinally together by an end of one straw extending tightly into an enlarged socket end of another straw. The invention also provides a device for punching transverse holes in a straw comprising a punch (14) and die (16), and support means (18) to either side of the punch and die for supporting flattened surrounding regions of the straw during formation of the holes.</p> |
