The frame is a simple design consisting of the three arches and four spanner blocks held together by a bungee cord passed through. |
Here I've assembled the frame. I glued an extra short piece in each arch to accomodate the end of the spanning blocks. The bungee cord holds everything together. |
Here I collapsed the frame. I did this simply by pushing down on the spanner blocks to double them up. Then I pushed the arches together. It will stay collapsed under its own weight until I pull it back open. As we shall soon see this is highly convenient. |
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