Polaroid made 665 film, which gave a fully usable negative and print. I wish I had some of it! I usually press all of the negatives onto watercolor paper (any paper will work) when I peel the print back. I develop for the correct time and get a great print and then I put the negative onto paper for about a minute and press it down and roll something round that I can find around me on it for about a minute and I pull it off the paper to find a neat image. I know many people do this, but many ruin the print when doing this because they alter the development times, but I see no need for that. After all, I shoot Polaroid for the prints. Well, happy Polaroiding