A 3D-printed Beyblade launcher, called the "WMD Launcher," spins Beyblades at dangerously high speeds. The launcher can turn Beyblades into spinning tops of doom, colliding at high speeds and ...

All you need is ballpoint pen and rubber band, fixing tape, knife or scissors. The rubber bands may be those that are not very long, and if they are hard, their strength will increase. Who would like ...