I had a plank of red oak cut for a mantle; 7ft long, 10″ wide and 3″ thick out of “green wood” . I want to know if I can air dry this plank in my garage to speed up the drying time or do I need to place it outside? I live in Pgh and its December. As previous posts suggested I painted the ends with latex paint. Also what am I looking at regarding length of drying time to be able to stain the wood?