I didnt print it fully yet. i kept the holes and shafts that go in to each other the same size. So it might not fit yet. But its a start of maybe a complete engine. this is the Crankschaft , it consist of 5 parts. you need to print the journals 4 times to get a 4 cilinder line crankshaft 6 to get a 6 cilinder line crankshaft ;) Use the Fixpin to prevent rotating / torque of the shaft as a whole