Joostice is a juice bar in Newtown, near Sydney Australia. They sell delicious juice freshly made and sold in reusable jars. Inspired by the Second Life Mug by le FabShop, this handle turns those leftover jars into useful mugs, ready to quench your big thirst.
Print the STL however you like, then screw it down on to your jar. I used PLA on a Makerbot Replicator 2, at standard resolution (.2mm layer height, 10% infill, 2 shells)