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October 12, 2017 AT 2:00 am

Dodecahedron that prints without support – Experiment #3DPrinting #3DThursday

D05314e2445571413d2f04518ffac4e8 preview featured

bneedhamia shared this project on Thingiverse!

This thing is an experiment in printing. I realized that a several polyhedra should be printable without support, if cut properly, because their dihedral angles are less than 45 degrees from vertical. As an experiment I created this open-frame dodecahedron, cut into two parts, printed without support, and glued together.

Conclusion: yes, it’s possible. I need to work on the minimum frame thickness, because some edges were too thin and sagged a bit. I also need to come up with a better way to fasten the two halves, because 1) superglue requires more-or-less flat surfaces and 2) the raw print has some pretty significant gaps in it, because of the sagging and angles of the edges.

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