This is the text and photos from a single post by Gil Russell on Kartonbau.de, 31 January 2006. The original post also contained a German translation by the Kartonbau.de team.

http://www.kartonbau.de/wbb2/thread....7191#post67191

The entire thread is worth reading in detail, since it develops several very useful similar techniques. Although ideas float around free for the taking, and we are all influenced by them, this thread by rights should be regarded as the origin for many such techniques.

Leif Ohlsson