A Beyblade-like system of tops that you can have fight to the death (or until one stops spinning).

Assembly

• print a top piece, bottom piece, launcher, and pull ring
• push filament into the holes of one half of the top
• cut the filament to leave 3 "prongs" sticking out of that piece
• click the top half and bottom half together (you can use glue to permanently join)

-Tip: the spikier tops cause shorter, but more violent fights

• tie 6-7 inches of dental floss to the pull ring

To Use the Top

• insert the "stick" of the top through the holes of the launcher
• turn launcher upside down (so that the top is on top of it)
• insert ~.5 inch of floss into the hole of the top
• spin the top to wrap the floss around the stick
• pull the pull ring and watch your tops fight