I just had to make one. 3x12 inch pipe with a movable damper .
I put about 2 cups of chips in it see how it worked and it smoked for about 3 1/2 hours with the damper almost closed off . Going to make some for some friends . Best thing is I don't think I going have to use an air pump Merry Xmas to you and My buddy that told me about this forum ( pics are rough shape and final paint)
My wife calls it the flux capacitor lol
I put about 2 cups of chips in it see how it worked and it smoked for about 3 1/2 hours with the damper almost closed off . Going to make some for some friends . Best thing is I don't think I going have to use an air pump Merry Xmas to you and My buddy that told me about this forum ( pics are rough shape and final paint)
My wife calls it the flux capacitor lol