Coffee/Cup Holder for Couch

This is a simple cup holder for the back or side of a couch, best used for flat arm rests. Designed to save on filament. This can be scaled down for smaller couches: Arm rest scaling as followed: 100 % scale - 154 mm arm rest width. 90 % - 138.6 mm 81 % - 127.75 mm The cupholder itself is oversized for our larger coffee cups. 100 mm Diameter. Your standard coffee cup is about 81 mm. So scaling under 81 % I would advice against. Furthermore, I would measure your arm rest width, and print this 1 to 2 mm less than that for a snug fit.