Robot Building for Beginners, Third Edition

CHAPTER 24 ■ BODY BUILDING

A nutdriver looks like a screwdriver, except a nutdriver’s center is hollow and the tip is shaped to fit
around a nut. Simply place the nutdriver over the nut and twist to tighten or loosen the nut (see Figure 24-29).
Nutdrivers are inexpensive and available at local hardware stores. Because of the head-on accessibility of the
nuts on this robot, I prefer a #4 nutdriver to a wrench or pliers.

8. Place the nuts with integrated lock washers onto the screws. The lock washers
   should be against the surface of the circuit board.


9. There are a number of options for tightening the nuts onto the screws. You can
   use needle-nose pliers, your fingers, a small crescent wrench, or a nutdriver (see
   Figure 24-28).

Figure 24-28. Nutdriver tightening nuts onto standoff screws