How can i find the video of the submarine kiln,,?

Just trying to find that video of the charcoal kiln Mr mustache built using Old farm equipment where the wood came out with a ring how do I find that?

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I think the two threads below are what you are looking for:


Does hard or soft charcoal have an advantage over the other? I thought the useable gas created was dorected to the sh$t fire for the charcoal production.So the final product was smokeless carbon.So how does this power these contraptions?