My latest column on automata-making is now available on the Cabaret Mechanical Theatre web site. This installment provides step-by-step instructions and plan drawings for making a wooden leg joint. The joint is a little more complicated than some, but it has a few big advantages:
From the article introduction:
To depict a realistic human motion, it is helpful if the figure's joints only bend the way real humans bend. Joints that only move in the correct way give you more options for providing the necessary input motion also. This, in turn, creates a greater range of resulting motions from which to choose.
In the article, you will learn how to create a wooden joint that mimics the motion of a human knee. The joint is suitable for elbows and a few other types of joints as well.
Here's where you can read Dug’s Automata Tips, Techniques and Tricks No. 8 on Creating Wooden Joints for Automata Figures.