A few weeks ago while teaching Model Monday’s Fusion 360 class I stumbled on how to make a water drop form.  I have been working on a couch in my countless spare time and thought it would be a great time to try cutting it on the 4×8.  700,000 lines of G-Code and 10 hours of machine time later here it is.  Im not sure you could call it a cup holder, more of a cup suggestion.  The rest of the couch will fallow.