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A comment on Build “magic,” gravity-defying structures–with Legos, kite string, and physics. Parent comment

Re:Build “magic,” gravity-defying structures–with Legos, kit... by cwilkes on Sunday April 26, 2020 @06:50PM (#22991010)
You probably have already in a way:

https://www.concretenetwork.com/post-tension/basics.html

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