Very interesting design. It looks like the designer has some experience with sheet metal working and has tranferred it to his camping. I bet he has his own metal stamping machine (or access to one) to stamp cut the pieces and then a bender/folder as well. The points he makes about the versatility (adaptable to use other fuel sources and different size pots) shows that he has a background with several fuel stoves. I've never heard of this Eco brick - what's it made of?