Little barrel stove

[Al_Smith]

More to the above and my cheap skate buddy .He would find a section of rail road they replaced the ties on .They used a big carbide saw that cut the ties in three pieces then removed them,handy size .He'd load that barrel about half full and throw diesel fuel on them .Then dump about a pint of kerosene down the pipe and toss in a kerosene soaked rag followed by a kitchen match .Poof instant fire . 

[mike_belben]

An air compressor tank inside a 55g drum is what im onto now for a combo outside boiler and forced air furnace. 

[47sawdust]

Galvanized Maple syrup barrel was what I used. Vogelzang door kit, refractory cement in the bottom and up the sides.
The first fire was outside to burn off the galvanized coating.These barrel were a heavier gauge.
 Not air tight ,could burn out of control if not cautious.
 No fond memories of it.

[Al_Smith]

There is a local pallet works that my bud with a weld shop rolled some gigantic barrel shapes for out of 3/16"  plate steel  and basically copied double drum burners .However they have heavy steel stiffeners along the sides because they will warp and need attention every 4-5 years .Think about it  pallets ,oak .The fuel doesn't cost one red cent because it's all scrap and saw dust 
.It's a pretty good sized shop too all heated by barrels ,sort of with  fans of course .