Tru oil drying time is affected by humidy and if you have put on a heavy coat and it is humid it could take days to dry. You can thin heavy coats using mineral spirts and make a drying box using a cardboard box and a lamp to speed drying. The heat from the lamp changes the "relative humidty" so process time is shortened. If you can use an air tight box you are better off, but be careful your heat does not get to close to the stock.