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20" pipe build question

post #1 of 3
Thread Starter 

I've looked at so many of the builds on here, i decided i better give it a shot making my own. I've got a piece of 20" pipe, 24" long, that i'm going to use for my cooking chamber. I was planning on making 16x16x16 firebox, and double plating the top of it. All of my material for the firebox, and the RF plate, is 1/4". My question is, how big of a moon shape should i make going from the firebox into the cooking chamber? I've read on here that i should leave a lip on the bottom of the CC to prevent grease getting in the firebox. I was planning on going up 4 1/2 inches to the top of the half circle, and leaving a 1/2" lip around the bottom. Any ideas and opinions are appreciated. 

 

Thank You Guys in advance, and i've really enjoyed looking at all you guys' builds, they look awesome

post #2 of 3

Welcome to the forum!

 

Running the calculations on your cook chamber, you should drop the 4 1/2 inches down to 4 inches. Your opening will still be much bigger than what is required (not a bad thing) even with the 1/2" cut above the bottom of the cook chamber. What this does for you is make the horizontal cut length (chord) approximately 16 inches which will match up better with the width of your firebox. So, just make the firebox match where it meets the cook chamber and the height will be correct, it should make it easier to do the layout if that makes sense. Keep us posted on your progress and feel free to ask questions.

 

Len

post #3 of 3

Len has you covered.

I look forward to seeing the project.

Happy smoken.

David

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