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Sooo... I have been reading a lot on here and there is a lot of information on pot stills and thumpers. So my original set up that I made utilizes two 15 gallon beer kegs, one as the boiler and the other as the thumper. The one picture shows my copper pipe assembly going into my keg thumper. I actually made my first run without the thumper, my thoughts were that the system after the boiler was large and long, I was not confident it was going to hold temperature until it got to the condenser. Oh, and I am only doing 5 gallons at a time for now since my fermenter capacity is only about 7 gallons. I have been reading on here the various opinions on thumper size, some say there is no set size and I read on here that it needs to be about 1/2 to 1/3 capacity of boiler. My question, is there a such thing as too big or two small. In reading, it seems that a lot agree it is a good idea on a pot still to have a thumper. I ask about size because I was designing one from 2” cooper pipe I had left over from building the still. My new design is attached, the drawing on white paper. Is it worth making a thumper like that? Will it be effective? Thanks for all of your wisdom and guidance.