I’m new to shining on big still. Have used 3 and 4 gallon stills before, but i never built myself. I am looking to go sizeably bigger but need a little help. What gauge copper is good/ not to flimsy? Also, need to know size pipe 3″ or 4″ inch for a 50 gal and what size for the worm???? Thank you much in advance. Any good books to read as well??? I’m new here so don’t be too hard on me!!!