Emeritus Professor of Mathematics.
Big Screw Nutcracker
22K Views, 113 Favorites
LightBot
4.8K Views, 22 Favorites
Wooden Finger Engine
5.8K Views, 38 Favorites
A Chair for the Great Outdoors
146K Views, 1,009 Favorites
Walker the Robot
14K Views, 51 Favorites
CSS555 Solar Engine
50K Views, 423 Favorites
Workmate Sawbuck
39K Views, 217 Favorites
Solar School Bus
13K Views, 26 Favorites
Electronic Paperweight
28K Views, 74 Favorites
Electronic Night Light
18K Views, 53 Favorites
Terra Cotta Fountain
171K Views, 301 Favorites
The Easter Solar Engine
81K Views, 326 Favorites
