I usually get it from folks who ask do you want some wood. My dad always said if its free take it. I have gotten cut offs from Cabinet shops, recently I got a few 1x4-6 up to 12 foot free. I have a planner and band saw which helps with getting to size. He also had some large slabs with bark. Not sure what I will do with those yet but as dad said if it is free take it. I go to the local Rockler here and they will have cut off oak, walnut other species every once in a while a dollar a board. I recently had a student I precept and her grandfather works at a lumber mill I have been to once and he sent a bunch of cut offs. Also I never turn down old furniture that is broken. Even at work the were remodeling and throughing 2 inch solid Oak out in the dumpster some pieces 6-8 foot long and 6-8 inches wide. So I guess just keep your eyes open and don't be afraid to ask. Just don't beg without crying LOL