Here's the new setup -
I'm getting wicked-efficient use of my heat / fuel now - made a 10 gallon run in 4 hours Sunday. It was a concept-still ... I dreamed it up and it took 2 days to get it all together, dig the pit, arrange the blocks, backfill, etc. If I were to do it again I could probably make the whole thing in 2 hours, but that's the nature of invention, eh?
A lot of folks use propane - neato if your only goal is making your own hooch, but by the time you pay for the fuel, you may as well go to the liquor store and buy a few bottles of Grey Goose (well, not quite, but you know what I mean) ...
I used turbo-yeast for this batch ... that stuff is insane to watch - the top of the fermentation vessel was positively roiling with the stuff & the trap was literally frothing.
Anywhoo - there it is :)