This top requires these additional parts: 1 empty soda can 6 hex bolts 1/4-inch x 3 1/2-inch (I used Lowes part #63478, 24 cents each) 12 hex nuts 1/4-inch (I used Lowes part #63301, 6 cents each) Attach the bolts to the 3D-printed piece, place the assembled top on the inverted soda can, and spin the top with two opposing holes using your thumb and pointing finger. The top can spin for over 2 1/2 minutes with a good start.