Just found this website, here's a link to the Google translate version. If you don't know anything about German grammar you may have a hard time making sense of it. It's a guy who apparently builds model buildings, but the joinery is essentially the same.

http://translate.google.com/translate?js=y&prev=_t&hl=en&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.modellbau-quedlinburg.de%2Fmbq%2Fcms%2Ffront_content.php%3Fidcat%3D135&sl=de&tl=en