If you like puzzles, these 3D printed hendecahedrons are for you. A hendecahedron is a polyhedron with 11 faces.

Each of the sides of the Magnetic Bisymmetric Hendecahedrons uses 3mm ball magnets that are pressed into each hole. These magnets need to be able to rotate freely for the parts to hold together. You might need a pound or two of force to insert the magnets. Also, some tweaking may be needed to get the sizing right. The default size works well when printing in different PLA filaments but is too tight for ABS.

The magnets for the Magnetic Bisymmetric Hendecahedrons puzzle can be purchased from aliexpress, dealextreme and eBay.

Why spherical magnets and not cylindrical? This is because spherical magnets rotate easily which allows consistent attraction to each other. If you alter the magnet orientation, you’ll have to worry about some of them repelling each other. This can be a good thing because it makes the assemblage a bit more challenging.

The Magnetic Bisymmetric Hendecahedrons puzzle was designed by Thingiverse user Walter Hsiao from California.

You can either download the files for the Magnetic Bisymmetric Hendecahedrons from Thingiverse or have them printed through the 3D Hubs network.

Go to the Thingiverse download and order page