Diy Smoker Wood . Attach wood to the roof. In order to make one of these smokers, you’ll need to have some metalworking skills (it. 18 Homemade Cold Smoker Plans You Can Build Easily from www.luckybelly.com You want them to be about an inch longer than the length of your smoker. We built this meat smoker from a bunch of stuff we ha. It has plenty of room.