Welcome!
I admire your desire to "DIY" a smoker. And there are a number of plans floating around on the Internet - I would bet.
But- for me...the Amazin' Smoker tube is as cheap as I could make it. Todd uses stainless steel - and that will last a long time. As well - you do not want to use anything that is galvanized, or use any lead containing solder. Bad news when they get hot, as the release of some nasty ( and possibly ) toxic stuff can happen.
But, keep us in the loop whatever you decide, because we all like to learn new ideas.
Thanks for joining us!
T
