Read the excerpt from The Boy Who Harnessed the Wind by William Kamkwamba.I didn't have a drill, so I had to make my own. First I heated a long nail in the fire, then drove it through a half a maize cob, creating a handle. I placed the nail back on the coals until it became red hot, then used it to bore holes into both sets of plastic blades. I then wired them together. I didn't have any pliers, so I used two bicycle spokes to bend and tighten the wires on the blades.