Trying to make EVA sword be able to hold its own weight

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Hello, so the thing is I want to make sword (145cm) from first picture to be able to stand like on 2nd picture, but im not sure if it won't break if I build it the same way as in tutorial im planning to use to build mine, so how do I make it be able to do so? Currently im thinking of filling all empty places with eva, will that be enough?   submitted by   /u/Laaarion [link]   [comments]