I am building a zip line. The supports are 70m apart and one is 7m higher than the other. I want the lowest point of the zip line to be 2m lower than the lower support. How long is the wire? [more inside]
posted by unSane on Aug 3, 2008 - 17 answers

Where the heck do you buy a spring? Surprisingly interesting details inside. [more inside]
posted by stupidsexyFlanders on Jul 18, 2004 - 16 answers