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Balsa wood is extremely light in weight, which is why it is used for the construction of model airplanes, but it's also a bit pricey, which would rule it out as raft material for most people. However, a Balsa wood raft would be very strong, and due to it's light weight, it would be extremely easy to carry overland when bypassing waterfalls or rapids too dangerous to run through. (This is called a "Portage" by we canoeists and Kyakers.) If ya have the money, go for it !

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Q: Why is balsa wood a good material for making rafts?
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