Brian(posted 8846 days ago)I can't quite see why one should not hang the film for more than half an hour. When the film is dry, any dust settling on it will not stick to it so tightly that you couldn't blow it away. The film hanging in the vertical, dust is also not too likely to settle on it. Also, my films are seldom completely dry after half an hour, so they are still a bit sticky (great when they stick to something like the sheet) and soft (thus vulnerable). I always leave my film hanging over night. Then it is dry, and safe to handle.