BICky Ball
by PD last updated Sep 27 2017


Additional File


This is a pen cap with connecting features to make geometric shapes including a truncated icosahedron. This item was inspired by other pen cap items on Thingiverse

180 pen cap parts assembled make a "BICky ball" (AKA: truncated icosahedron, bucky ball, c60 and buckminsterfullerene)

60 pen cap parts assembled make a dodecahedron. (The last two pictures show the dodecahedrons)

The large "BICky ball" was not able to support itself so I had to build it with something to support it on the bottom. (the support is an upside down mini-trampoline covered with a sheet)

I uploaded a video of the shapes and the connectors to YouTube The end of the video shows that the caps also mate with Lego small ball joint parts.


I used a CNC mill to make aluminum molds and injection molded polypropylene to make this part.

I had to use two separate removable insert in the mold to form the cavities in the cap for the pen and connecting feature. I cut the aluminum molds with a 1/16 end mill.

Name File Type File Size (kb)
Icon BICKY_BALL.stl Model File (.STL) 2,379
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Maker since May 2017

License Info

Public Domain Mark

BICky Ball uploaded by Scorch is free of known copyright restrictions.

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