About this 3D model
Made obsolete by http://www.thingiverse.com/thing:2341 Use for separating cap from beer bottle (non-twistoff). Works on the same principle as banging the bottle against a counter. Does not require the addition of any other parts (such as a penny as Zach originally suggested). Next version will have the handle slot deleted/fixed since it does not print correctly. Currently is in beta state, has opened a bottle for me, but may not work for you. Please submit photos of the bottles it did not work on so I can improve the design. Current GCode file is for 4032D PLA, but may work for ABS. Its also raft-less since Ive found PLA prints better without one. Note : If you are making your own GCode for this, make sure you use at least 50% infill as anything less than that may make the part too weak to open the beer. So far I have been able to open 3 bottles with one made out of PLA before failure. Let me know how different materials fair for you.