I watched my father-in-law delicately balance his coffee cup on top of the cupholder in his nice sectional sofa for a week. The designers of these cupholders did not have cups with handles in mind. I designed this insert for exactly this purpose as soon as I got home. Now he has a nice platform for his coffee.
I printed this on a Prusa Mini+ with PLA. Best print was printed top down with supports everywhere. The supports came off nicely and left a fairly smooth top.
The author hasn't provided the model origin yet.