3.6 PROTOTYPE V.4 OPTIMISATION V.1
At the second stage, we came up with the idea of a double-layer design. The first layer would be the spiking pieces with a more stable connection with the second layer. And the second layer were the same structure with the arm part. The spiking pieces were not only connected through the top tips to the adjacent row, they were also connected by iron wires to the second layer in the top corners. Moreover, the rotating mechanism was also improved. By fixing one end of an iron wire on the second layer and letting its top end sliding on the cuts of the first layer, and by pulling the wires fixed on the top end of the iron wire, the spiking pieces were able to be rotated upwards in regular angle and direction.
The PROBLEM of this deisgn is that the spiking pieces need to be cut so as toconnect the supporting wire underneath to the spiking pieces as well as to procide pathways for the movement. The two parallel cuts are in the middle of the pieces, which damages the appearance to a great extent, as is shown on the right.
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