Alternating Swinging Arms (Mechanisms) - Page 129, Build #170

Did I mention I like moving things? I especially like watching the gears move. So, this one was just perfect for today.

Parts we're going to use today:

Video for Swinging Arms:

LEGO Swing Arm Video

Gripper Fingers (Mechanisms) - Page 188, Build #225

This is what we're building today. Another gripper!

Parts you need:

Let's get started! 

Here are some videos. Enjoy!

LEGO Finger Gripper Video 1.1

LEGO Finger Gripper Video 1.2