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. The support material is the powder inside it which can be removed by tipping and tilting the bottle. The support material would otherwise not be removable if using an FDM printer since the inside would not be accesible. I have also uploaded a cross-sectioned view of this earing which can also be printed. Printing both a regular one for one ear and a cross-sectioned one for the other if desired.
I will replace the rendered image with a 3D printed one as soon as someone (hopefully me) prints it on the Sinterit Lisa