About this 3D model

Ever been carrying a coffee cup and wished you had both hands free? This design is clearly not perfect; I\'d rather have the holding ring at the other end so the centre of gravity is better placed, or to have a second ring to hold the base of the cup, too. Later iterations may see some design improvements! Or, do it yourself to spare me the trouble! ;) Hope it doesn\'t spill on you! I make no promises.