Joined Tetrahedrons
thingiverse
It's possible to construct chains of tetrahedrons by connecting neighboring pieces by little clips. Then the whole figure is covered by triangular panels with iron foil attached. At last you can take a set of 24 edge colored triangles printed on magnetic foil and put them on the faces of the chains with matching colors at the edges of the triangles.
Download Model from thingiverse
With this file you will be able to print Joined Tetrahedrons with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Joined Tetrahedrons.