This is an easy weekend woodworking project idea you can make from just barely over half a sheet of plywood and a 2×2 board. Edge banding is totally optional, but it does. Since i made this diy geometric bookshelf using plywood, i used iron on edge banding to cover the exposed edges.
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15 DIY Geometric Shelves You Can Make in No Time
Two 8 ft 1×2 common boards