I'm going to build a gravity fed smoker. Seems like one the size of Stumps baby smoker would be about the right size. I've seen plans for sale for $80 but seems like those funds would be better used on supplies to build it. First thing will be build the frame with square tubing 1.5 or 2". then build a Shute 8 X 8 that tapers wider. Thicker metal for the hot box. I think the opening for smoke to enter the cook box will be the size of a dollar bill. build up the Shute and install in the frame before skinning with sheet metal or plate metal. a computer fan with a PID like the master built or a pipe shut off valve like many have . I guess im just asking for any thoughts or ideas.