11Instructables364,485Views84CommentsWisconsinJoined August 15th, 2007
Emeritus Professor of Mathematics.
- TinkerJim favorited (Un)Folding the Mysteries of A4 Paper -- There's Some Pretty Far Out Geometry in There and Dipyramids (Un)Masked by mgrodzins4 months ago
- TinkerJim favorited Simple Tin Plating Copper Without Energy or Dangerous Chemicals. and Copper Plating a Quarter Without Electricity by nicamarvin1 year ago
- TinkerJim favorited Electronic Pendulum Made Into Brushless Motor and Make a Passive Ramp Walker Toy Using Binder Clips and Wooden Dowel by JimRD1 year ago
- TinkerJim commented on HoundDogRock's instructable Bioplastics: Casein Plastic and Starch-Based Plastic1 year ago
- TinkerJim favorited Robot which can walk on irregular surface , How to Make Six Legged Walking Robot - DIY Robot and A follow me robot with simple circuit by Saurav Chakraborty1 year ago
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