Self supporting frame work

Krisidious

http://www.architonic.com/ntsht/cnc-carpentry-the-selfsupportingframework-/7000526

sweeet...

The use of sophisticated, at times highly complex, wood joinery for load-bearing constructions, the kind that you still learn today as a carpentry apprentice, has declined in the last few decades. Such handwork was too expensive and so wooden elements began in most cases to be joined using steel nail plates. Recently, however, carpentry-oriented joinery has been enjoying a renaissance thanks to the increased use of CNC-driven manufacturing techniques – even connecting parts can be produced in a number of geometric variations and cost efficiently at that.

TIG

Interesting...
Similar idea to the folding wooden tripod stool/washbasin invented by the Victorians...
http://www.designsponge.com/2011/06/diy-project-tripod-camping-stool.html
Here's a modern metal equivalent http://www.ebay.co.uk/itm/Folding-Tripod-Stool-Camping-Beach-Fishing-etc-/221035922112?pt=UK_SportingGoods_Camping_furniture_ET&hash=item3376c482c0
Also the three knife balancing trick... http://www.youtube.com/watch?feature=player_embedded&v=gDST__crpdA

dale

Reminds me also of the grid shell, although some use steel fasteners, some are apparently all wood joinery.