Print both the FlyWheel and the Hand Pump. Make sure that the optimal flat side it laying on the print bed I recommend a 90-100% infill for the flywheel but you could probably get away with only doing 70% Print will take between 1 and 3 hrs to print in total depending on infill and print speed After printing it will take almost no time to assemble Obtain the materials Cut a notch into one end of the stick Compression fit the flywheel onto the stick until it is about 1/3 the way up the stick Feed the longer end of the stick through the center hole of the hand pump Put the middle of the rope into the notch and tie it off with another piece of rope or glue Tie the ends of the rope to the ends of the hand pump