Warning, this device involves fast spinning objects and high torque motors. Letting it go for the first time is kinda scary. Watch your eyes.
Randofo gives this his seal of approval of awesome, so expect it to be in the next 62 projects to make with a dead push broom.
Below is a video of the death bringer. Thanks Matt for putting yourself in harms way.
Step 1: Supplies
1 push broom brush
1 6v lantern battery
1 large 12v motor (a machined shaft helps)
2 pipe clamps
1 piece of scrap acrylic or wood
1 on/off switch