You might seek permission from zen stoves.

http://zenstoves.net/

Henry shires has the instructions for his tarptent on his site and may still.

http://www.tarptent.com/projects/tarpdesign.html

Hammock forums is a plethora of do it yourself information.

White blaze has lots of info - and member bashing

Ray Jardine http://www.rayjardine.com/