Well I am new, been reading and watching some of the builds and now have planned mine out. 28 x 28 x 48 volume smoker with RF. I have ready access to TONS of 1/8-1/4 inch aluminum panels and can cut any shape I want on my CNC Plasma so this is the material I will be working with. I also have TIG and MIG welders and tube bender (for the legs) for putting it together. I used the Calculator to figure out what size fire box I would need as well as the opening needs of the firebox to cooking area opening and pipe length and intakes for the fire box. I do have a question about these intakes on the fire box. I plan on cutting round holes for the intake but was thinking of taking some pieces and cutting them as a half tube around these openings. It is the actual openings that matter and not what is over them that matters or does it play a part in how the draft functions? Here is the quick model I put together that I will be using as a reference for the different panels I will program for cutting on my CNC.