Home Made Trailer Smoker for Cheap

Items you will need:
Trailer
Used 250 gal propane tank
and old boiler tank with rivets
flat strap 1/4" x 2"  (to go around door opening)
2-4x8x1/4 plate steel (to make fire box)
5' of 4" pipe (for smoke stacks)
4x8 sheet of expanded metal (for racks in side smoker)
a lot of grinding wheel 
a lot of welding supplies (i.e. oxy/acet tourch, wire welder, arc welder, welding rod/wire)
turned mesquite handles 
an umbrella
BEER
MEAT
and wood

Step 1: Find a trailer

Buy a trailer:
Check local auctions or craigslist for good deals, I found this trailer at an auction and paid $20 for it. However you get what you pay for, I had to haul it back on a flat bed trailer due to fact the original rear diff was seized. Notice the fender damage you will see I repaired it a piece of sheet metal that I tack welded in place and used auto body hammers to form the curves. Then I applied BONDO to hide major blemishes. 
I tore the old metal flooring out and replaced with 1/4" diamond plate (you can see that in the next step).

Comments

[phillyboys]

What a fantastic job. I start my construction in a few weeks, it differs in design from yours, just hope my first instructable is as good. Again well done

[riverrat29]

oh and thanks for the comments...

[riverrat29]

I haven't heard that before, however the metal was steel and not galv. steel. As far as the nasty stuff from the fire goes yeah the inside of the boiler was pretty nasty... I had to clean it a lot more then I did for the propane tank. What I did was wire wheeled it to break off the residue, then sprayed the inside with a soapy water (degreaser of sorts) and scrubbed it, then I let it dry. Then followed up with sand blasting, the inside and It came out pretty darn clean. I have seen other BBQ smokers made from the same style of tank..

[skiedra]

I've read some boilers are not safe to use for food prep due to metal composition and nasty stuff coming out when fire burns inside.

Not sure if this is the case with your smoker.

Very cool implementation though!

[bg_askins]

FANTASTIC