Stainless Steel Reverse Flow Project

Discussion in 'Reverse Flow' started by lendecatural, Aug 11, 2014.

  1. lendecatural

    lendecatural Smoking Fanatic

    I've been hanging around here for a couple of years learning all I can while I scrounge up enough stainless to start a build. I've got enough stuff to start so it's time to get off my ass and get to work! The tank is about 120 gallons and was a liquid oxygen tank, scored it for $300 a couple of months back. I got a bunch of scrap plate from my Dad who can no longer weld since he got his pacemaker when he turned 86. The majority of the plates were 19 3/4 wide and about 35" long so I had to add a couple of strips to get the firebox to come out the size I needed. It will be 24w x 24h x 19 3/4d (~130%). The tank is about 30" in diameter and 42" long.

    The trough to the left is 8' long and I was going cut it in half and weld it back to make a grill shaped smoker until I found this tank. The trough is only 0.090 sheet so the tank @ 3/16" is a much better option. I found a stick and a half of 1 1/2 x 1 1/2 square tubing to use for the frame and I may split it and make channels for the grate supports. I'll still have to go and buy some pieces but I have it down to a manageable beating paying retail.

    You have to love a plasma cutter....

    This is the strip I have to add to get up to the 24" height for the firebox.

    Down to the firebox door end, I've got all the seams welded outside and most on the inside. I started working on it a few days ago but I'm trying to get it ready for my buddy to use it for an event in September to support a local orphanage. I'll need to add a strip to the top so I planned on beating some sheet stock into a curved transition from the strip (about 4" down) at the door and under the RF plate to become the baffle plate. I have a chunk of 3/8" 308 plate that is big enough for the RF plate and I plan having it removable split sections resting on a center drain angle. I still haven't decided if I want to get a Harbor Freight trailer or just set it up on casters. I have a utility trailer with a ramp and a boat winch so I may just winch it on for now and make sure I leave the option open for a trailer later. Thoughts and suggestions are very welcome!
  2. Hello.  Looking good so far.  Really like the stainless idea.  That should last you a year or 2.  I'm with you on the trailer option.  You always think you will never need to have it portable and then something comes up.  Keep up the good work.

  3. roller

    roller Smoking Guru SMF Premier Member

    Stainless steel....Sweet !!!
  4. rob sicc

    rob sicc Smoking Fanatic Group Lead

    Saying hi so I can follo your progress.  This is ging to be sweet!
  5. I'm in can't wait to see it come together
  6. radioguy

    radioguy Smoking Fanatic

    Hey Len,

    Glad to see you get busy. It'll be one sweet cooker. How are you welding the SS? I'm in following this build.

  7. lendecatural

    lendecatural Smoking Fanatic

    I'm running 0.045 flux core 308 stainless wire through my little Lincoln SP-135 @ about 115 amps, I let it rest often since it has a fairly low duty cycle. TIG would be too slow with the Syncrowave 350 and the spool gun too awkward in the tight spots. Besides, I haven't bought stock in the power company to fire up the 350. I'm getting good penetration and welding both sides so no worries. I may TIG the square tubing for the support, just depends since the TIG is pretty but harder out of position.

    Finished welding up the inside beads.

    This is the shape of the scrap pieces I started with so I'll still have plenty to make hinges, etc. from the drops.

    Last edited: Aug 12, 2014
  8. gent

    gent Fire Starter

    Any updates,   Wish I could have done stainless but it's a bit out of my skill level.  hehe
  9. lendecatural

    lendecatural Smoking Fanatic

    I got a little bit more done before winter set in, deer season, and life have gotten in the way. This last ice storm should be the last hurrah so I'm hoping to get started back up on it in the next couple of weeks. The good thing about stainless is that you don't have to clean it all back up when you take a break, the bad is it moves around a lot when heated!
  10. Real nice! & Real pretty! Gonna polish it up in the end? 
  11. wolfman1955

    wolfman1955 Master of the Pit

    This thing is going to be great!!
    Keep Smokin!!!
  12. we are waiting for more pics, cant wait to see

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