Parallax Penguin Manual page 10

Step 7: Screw 2-56 ball links into feet
The Penguin kit contains two different sizes of ball links. The 2-56 threaded ball links are used in this step
(the 1/16" ball links are used in a subsequent step). Open the package and thread the 2-56 ball link post
into the front of each foot. You can tighten them using a 3/16" socket or small wrench. Be careful not to
scratch the feet as you tighten the ball links. The threaded portion of the ball link will not screw all the
way into the foot because it has a small non-threaded portion between the threads and the hex-shaped
post. Don't force it beyond the point at which the ball link is easily screwed into the foot.
Copyright © Parallax Inc. Penguin Robot (#27313-27316) v1.4 2/16/2010 Page 10 of 23