Cross-Sectioned Klein Bottle Earring

3D print a 4D object. Featuring the Klein bottle that you can wear as an earring. The outside of this object is also the inside. It's a bottle with no edge and mathematically 0 volume. I am using the hole which is also the handle to attach the hook that attached to the ear. This is designed for the Sinterit Lisa competition. This is designed to match with the regular (non-cross-sectioned) version.   I will replace the rendered image with a 3D printed one as soon as someone (hopefully me) prints it on the Sinterit Lisa