We're giving away 3 copies of the book Making Things Move: DIY Mechanisms for Inventors, Hobbyists, and Artists!  It's packed with detailed information about all kinds of mechanisms as well as sample projects and ideas.  Best of all, it's written in a way that people with no background in engineering can understand.

I'll be sending these books to the next 3 people that post Instructables meeting the following criteria:

- Posted on or after July 3, 2012
- Involves moving mechanical parts
- 4 or more steps
- Full original written and photo documentation

Post a link to your Instructable on this forum post to enter!