Copyright © Parallax Inc.
Penguin Robot (#27313-27316)
v1.4 2/16/2010 Page 11 of 23
Step 8: Attach plastic ball sockets to 2-56 threaded rod
Now you’re ready to thread the four (4) plastic ball sockets onto each end of the 2-56 threaded rod.
Twist both ends on evenly until the rod length is about 3.4” long. If this is too difficult to do with your
hands, consider carefully holding the threaded rod with pliers. Use a small rag to prevent it from being
scratched.
Step 9: Drill a 1/16” hole in the servo horn
Each servo package includes an assortment of servo horns. We’ll use the widest servo horn in this step. If
you make a mistake it’s okay because there’s a second one in the other servo package.
Put on your safety goggles. Place the #55 drill bit in your handheld drill, drill press, or vise. Very carefully
enlarge the two outermost holes on the servo horn. If you are using a drill, run it very slowly to prevent it
from feeding into the hole too quickly. If you run it too fast the drill will plunge into the plastic and you’ll
crack the servo horn. Take your time and use a low drill speed. If you have secured the drill bit in a vise,
gently twist the servo horn onto the bit to enlarge the hole. Do not press down, and be careful not to
injure your hands.
Summary of Contents for Penguin
Page 24: ......
