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Good Afternoon Everyone,

I actually only have a couple of questions.  This is my very first time attempting to build a smoker from scratch.  i have had some serious progress and i think it is coming out very well (full post on my build will be when im done and will include pics).  i used "Feldon's BBQ Pit/Smoker Build Calculator" for the dimensions of my design.  I am now down to the part where i need to attach a chimney stock on the top of the fire box.  The calculator suggests a total chimney volume of 190.40 cubic inches.  The calculator allows you to put in a recommended pipe diameter and then tells you what the length needs to be.  I don't want a ridiculously long chimney coming out of the top of my smoker so i chose 4.5 inches as the interior diameter of the chimney putting it at about 12" long.  I'm ok with that length but i can't for the life of me find a tube that is 4.5" interior diameter with out the walls of the pipe being over 1/4" thick. I thought because of this i might as well make the chimney square shaped but i am really shitty with math.  What would be the proper dimensions for the chimney if i wanted it to be square or a rectangle (190.40 cubic inches)?  or can anyone tell me if there is a place that will make a custom chimney for me that won't be unreasonable in price?

I greatly appreciate you time on this.

V/R

Jason.

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Hello Jason.  It isn't as tough as it may seem.  Say a 4" ID square stack 4' long.  You are working in cubic inches so 4x4x48 =768 cubic inches.  Hope this helps.  I would keep in mind that if you can I would keep the stack above head height.  Keeps the smoke out of your face when turning the meat.  Just my idea.  Keep Smokin!

Danny

I believe you could use the 4" pipe and just increase the length to 15". Extra three inches shouldn't be too much to notice.
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