I am building a tun like you instruct on DennyBrew. You included pictures of your keggle, with the copper pipe inside, but have no real description of what it is for. Straining is my guess. Does/did it work? (Past tense because that page is 5 years past it’s last update, and you may not use that anymore)
Is it only for hops, and not trub? or does it filter that out too?