After processing I simply hang the film from a frame in the middle of my room. Is there any way to tell when the film is dry and I can put it into sleeves? A rule of thumb, like "the same time it takes a light/medium weight/heavy cotton fabric to dry out"? I live in the east, so humidity in the room varies greatly, from close to 100% in the summer to very low in the winter. I apologize if this question has been asked before, my search turned up no answer. Thanks in advance for all advice!