My immediate response after reading the story posted in the CL listing was what's wrong with my "K" briquettes? Friggin tree hugger. Then they send their productions overseas so they add to the economic frustrations.
Sorry to get political about that. I like the design but isn't it just another hibachi using airflow over the coals to get a temp so you dont need so much fuel? I don't see anything special except that a rack spins out of the side.
I think with your fab skills, it would make some nice ideas for MODing your UDS.
How about you cut a 1/2 way around "door" on the UDS, Weld in some 1/8" steel plate on the sides for some added strength then make your own barrel hinges, fab a second rack and support ring that rotates out with the door?
That's the only MOD i see happening from this one. The tough part for most would be getting such a wide door to seal tightly again because no one here likes to use a cutting wheel on their grinder and would rather use a recip which would cause bending.
Just a quick rant.
Other than that, i like it. LOL!