No i just dry fit mine together. I have the square cooler. So i first decided to just do the square set up and a "t" linked to the ball valve. Not being satisfied i only did one all grain and then got more "t"s and sections so i have 3 longer runs, 2 med runs, 6 short runs, 5 "t"s and 4 corners. I used a cutting disc on a dremel to slice slits about 0.25" throughout. Pretty happy with the result. There is enough of a good fit just pressing them together and the clean up is just fine. I think i have 12 or so batches done since then and always i see the petina as i get stuff ready and the shiny new penny look after the mash. whatever, been drinking some good brew and quit worrying so much.