Octahedron Beam
thingiverse
The article, "Ultralight 3D Printed Beams Could Bear Heavy Loads," discusses a new design that uses Blender's skin modifier for creation. The creator hopes to use it on various scales, not just rectangular beams. In future iterations, they plan to add connectors at the ends for repeatability. Check out the original article for more information: http://www.3ders.org/articles/20121201-ultralight-3d-printed-beams-could-bear-heavy-loads.html.
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