Note that the Zip either smokes like crazy or flames like crazy, either way wasting most of the fuel. That's because air is blasted in from the bottom and tries to burn the entire fuel charge all at once from the bottom up. Beauty of the tlud (aside from having no moving parts) is that it burns from the top down and the fire is completely controlled by the air inlet vents and burns completely (clean) even at low heat. Since its completely hollow when disassembled, it takes almost zero cubes and can be packed full with other gear.
