Found a good source of free smoking wood today. Went to a custom cabinet/wood furniture shop and asked if I could have some of their scraps. They said sure they were just going to burn them. Came home with maple, oak, cherry, alder, and will go back for more and other kinds once a month or so. Now I need some advice. Will wood like this be good to smoke with? I mean this stuff is pure. No knots, bark, or impurities of any kind. Will this make the smoke better or are those things needed in smoke. What do you guys think?