Made a few gassers over the years and they worked well on pallet wood but in a wet woods they failed to perform so I gave up on them. Anyway after seeing a Zelph stove I thought of giving it one more try. Been meaning to make one fo ages and finally got round to it on Monday, It weighs 11 ozs and works well on pallet wood, will try it soon in a wet woods. It does gassify as you will see in the pics so twin wall isnt need as Zelph said ! soz photos not loading, I'll try again l8r Dont know whats going onstill wont upload the rest of them Arhhg