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YASH - Cardboard spool holder apex
by chowderhead, published
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Cut a bunch of uniform equilateral triangles from a cardboard box (7" high, 8.08" base works nicely). Glue together, rotating cardboard triangles 60 degrees each layer. 8-10 layers depending on cardboard thickness. Make two. Print 2 apexes and glue to one angle on each of the cardboard triangle base. Cut 5"x12" strips for base. I used three layers on exterior and one interior. Space scoring so folds are neat. Print a spring and rod (holes are handy for pinning the rod to the base - can use a M3 screw or 3mm filament). Print http://www.thingiverse.com/thing:11365.