So I am in the process of building a new smoker at home. Being a NW native and having spent about 10 years in SE Alaska, I've smoked a lot of fish on various smokers. I found this site trying to research different designs for a cold smoker. This is a great forum with a lot of good info. Thanks. I'm a construction guy and have spent a lot of my career doing concrete so I built my own firebox out of cast-in-place concrete with the flue to the smoker out of concrete pipe. Looking forward to being on here. I will post some photo's down the line. The firebox is done but I am setting the flue soon. Thanks Again.