![](https://blogger.googleusercontent.com/img/a/AVvXsEjxne-XLNYqCuhjCpIeBi7ZqnMFGfjHAoYEphlbC3p1wbVgTz_ocml6bEnIQkAZfC6i6PBa6q28nZ2GaOKjD3sWjlL4eqnsczUxVHf-w79K6IQTgU9xrhAZjmdrDhM-zNgV4ikOodN9jTwiE5oHU5jFHzt7CV2LFhsQ5r9DSTzEnQ5CuKwSqW7Qmyihfg=s320) |
Bolts used as ballast, there are bolts like this at the bottom of the red can.
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![](https://blogger.googleusercontent.com/img/a/AVvXsEgf7m92RSc0sqLx_1xWb7_5MuI8OkCsZTI86bxgX84Er3x9IGLSd8goPri_ajs_ljGbZGW3KTyMoyDi4F3YZsSnew-_tRBaEdHRdhKlhQbz7tBtELgwZgT5kBqX1dxySL3dsoiaEx8xB_k34bkt8bGaCDiADLHRdMC6gD7ask_y4uvjMa5CBS70tE1XRA=s320) |
Building mk1, these are the 3 330cc "sail" cans which are at the top. This was the first version of the sails, from lamination sleeve and gaffer tape.
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![](https://blogger.googleusercontent.com/img/a/AVvXsEiCaYIz3gU8rvzjM5ZPtupn3COnbBpLu4BuerbuDJOgzwHB6pMTDmm1c_UJmgjF6OEEoCl5xOgKTBwfVfsspuVTV8CG_0OgylrKAzo4e45VlWjPkmMjbVCaRoIN_9LlX9yPbB8CXXbfFKMubOwbjO05tuIVJmg6LX4iuRw5jI66R72WIH4iqlC3gPdAug=s320) |
The first version also included steel pins which were later swapped for lighter bamboo rods.
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![](https://blogger.googleusercontent.com/img/a/AVvXsEgXP5x3mTmb2DL_SNdw8b93fAque7cdjuS7QX2KJsZKCPtn1ocXxSOW3ujGjE1TC3DKMh54jd-KWZTEuBNIOeTI7zVda-IJjY28sxXDSyNcv3YP3UedLIYpgvkNV9SNzK_H4hMaxV_yBDFGeKPPvhnX4BEDM4ReB5XRNAwkycQAml-DB2ZFE8ZZx80oDw=s320) |
Jigging uses extra red joiners. The red parts need to be equispaced on the rims to make the tetrahedron. 1. Six parts on the rim are a neat fit, and with about 1mm between them they are equispaced. 2. Remove 3 jigs and glue with the hair elastic still in place. 3. Remove hair elastic when glue has dried.
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![](https://blogger.googleusercontent.com/img/a/AVvXsEh7n02khI2Te_e0AY7aB2mC8pptW2rXtJSYNLOVyUIfXIyC0vPyzNZjang4L_sDBwIp-uvz-GhLGaTUFmxtIBK5Rk74dsp1qipVd0xZuUfeggT257T_2xBtWWaKHS1S-frxSZHhmgivaCBxoYBqC0sXK2ax-JupcFqgbzaFh3fG17a3LZwMMZQKEBVtxA=s320) |
Latest sails are mylar held on with clear office tape.
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![](https://blogger.googleusercontent.com/img/a/AVvXsEhito5Ksspnl_ClRu4nCdMWNYiHlqc60xkBf55OZGbQF8hmsv9d619Ux_2pwd5n0RGvPIj1gJMSmOlFxWCCnzwb4-MOtVHoEw1EjaugaWGMPZ2oRAcbQoRWJ2VzEiljYVfJ-flyDcYRtshzvuSXj7K_zuyr3q3bBWyh2sdToLkiBapf9mj6hbGco3kl4g=s320) |
Net for tetrahedron
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![](https://blogger.googleusercontent.com/img/a/AVvXsEiBR97kv3_BZgScvdXSAzpFN4C0aRE-q6UNOeG5vwN5arYkkvMpDv1W-QcUkmYE9SNFpxRe2FHkukldbvZEHx6Hvg-FUiguuND_QjOfHueABT4ENEXf6Cdng5zmUhT72Sfn0b8dHe1-Xpu73diwhqy8Y4uEv3u1Gcpv7DQwgMbagWcG1AKMKcA-P0BhFg=s320) |
Second version. Despite changing the sails and pins, the water was still quite near the can rim of the lower can, and that called for....
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![](https://blogger.googleusercontent.com/img/a/AVvXsEhewlRzzhXaRg4dRXT7j2bWh6Ygw1892l4Do-MimX7xmfdVFOH-KDyU-l3hLwJOP0Yb919KBNOmjHKiwU7IXrUQGS14cfSY81c1Fk3bGBh2sbbuwjwGP2JDj8ccUwdrxjlj70FRSx92UHUhuT5eOY29kaEjb8G8rQPEdjPJq0An1IaqAzGV7xuAJoSNxQ=s320) |
a big red can! I was prepared to buy one contents intact but found this one in the gutter. I bought the other skinny can but soon realised it didn't have enough floatation volume.
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![](https://blogger.googleusercontent.com/img/a/AVvXsEhtFXuy6WAAdxxmAqdevN3DkZ9YUgelWHpWN7ObPzQPJSi1HHYZ_uJo2iBBqCGrTdfi4xN6hhf5Qph262OxPqBnIaw1sjg4_NWSQ3V_eVEfCCxRgpHKu5MEaiEZyoE3LRxeHOyKUQMEbG_Ovq6xFhM8zZ0M6WqeUdxpRQ7laETdWERi2PxAkutq9_2MGg=s320) |
Second version floated too low still.
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![](https://blogger.googleusercontent.com/img/a/AVvXsEgTBFzdddS1-LEXVjNdYBkqawcs4zB6i71HDbpJQ9X1LfLu9dut5YnIKBNOWtXfFogsF5zedqWo6COxiv_JHbChidbbn-od2l10UyzMLF0p3mOAqDGdjMB4tdDklMGBaJbmvo8kVf8hXyzE7VGa943WM8EmdNfglHohdU56iQuLQStej6goDIKnPMYL6A=s320) |
Woo hoo, third and final version in progress.
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Hi
This shows my latest can raft, and I didn't need an expanse of water to test it! Pictures tell most of the story. It took 2 days to build, and the final piece in the puzzle was getting a 500cc high volume can which had enough capacity to float the thing. A cube or prt cube in the same pattern should work as well. Video is here, https://www.youtube.com/watch?v=IAvNbqUQ8Mc and the 3d printable file used to make it is here, https://www.thingiverse.com/thing:5256279
Regards Steve Nurse
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