High there @Aleo :) Most of the parts have been described in the topic, if you have any specific questions, fire away!
ahhh, now the cat's out of the bag :) you didn't read very well ;) http://www.rollitup.org/t/12xcxb3590-passively-cooled.898631/#post-12312768 the material is aluminium square tubing with nylon corner plugs
Most of the parts have been described in the topic, if you have any specific questions, fire away!