TinkerJim

Wisconsin Joined 2007-08-15
12 Instructables 628594 Views 105 Comments 298 Followers

Emeritus Professor of Mathematics.

Recent Instructables

Big Screw Nutcracker

LightBot

Wooden Finger Engine

A Chair for the Great Outdoors

Walker the Robot

CSS555 Solar Engine

Workmate Sawbuck

Solar School Bus

Electronic Paperweight

Electronic Night Light

Terra Cotta Fountain

The Easter Solar Engine

Finalist

Finalist