Magnetic bisymmetric hendecahedrons (an 11 sided space filling polygon). Each one uses eleven 3mm or 5mm ball magnets. The magnets are pressed into each hole and need to be able to rotate freely for the parts to stick together. It should take a pound or two of force to insert the magnets.
Unique Design Walter!
Thanks for sharing your design with our community!
Can't wait to see more of your future designs!