Small cups sometimes do not stack well, this 3D-printed holder will fix that. Comes in handy when the gravity is shaky.
Weyland-Yutani Corp is just an amazing company, making thousands of scientists, engineers, administrative staffs busy in numerous offices. "Making Better Worlds" requires much talents and needs a lot of work. So you need much good espresso, and The Company provides these cup holders.
Yes, you might have heard of some regrettable incidents outside and far away (reported by R. Scott et al.). If not, it's okay; after all, it only involved a few random individuals and was far away.
Step 1: 3D Design
This was designed using OpenSCAD and Inkscape.
Being a quite large piece, it's okay to print in draft mode, with 20% fill percentage. It took 18h on my CEL Robox.
Designed for cups with an outer diameter smaller then 6 cm. Horizontally resize by a factor K to fit yours, where K=D/60, where D is the diameter of yours plus 2 mm of margin, in mm.
See source files on GitHub.