>>2516395Its a depression era design. Hobos and bums built them more or less out of necessity with nothing more than a can opener to work the tin, but having access to better tools makes for a better looking little stove. They were used until rusted then discarded for a newer can.
As far as functionality its about the fuel. Twigs and thumb width diameter sticks are about all that will burn. And as others have stated, you'll be constantly fueling it.
>>2516417If you really want long lasting constant heat, use charcoal. Natural lump in my opinion versus the briquettes is the way to go.
> Do they work?Yes, kept hobos and depression era folks alive with boiled water and hot stews.
> is it efficient?Not really, there are better alternatives to basically the same thing.
> is it worth it?Why not? Give it a try, make a hobo kit and chill under a railroad bridge while cooking some dinner.