I would second the recommendation to try a practice roll. 120 film is connected at only one end with tape. The tape will be on the inside of the roll near the spool after it is exposed. Be careful when peeling the tape off, if you do it too fast it can cause static electricity (some say it is a chemical reaction of the tape) that can fog the film. You can use scissors to cut the film off the paper if you want. The paper runs the entire length of the roll on 120 and only on the front and rear portions on a 220 roll. When unwinding the roll, just pull on the paper and let the film coil up into a tight roll, then pull or cut the tape off.(posted 8137 days ago)Like 35mm on a stainless reel, it is very important to make sure the film is centered in the reel after you attach one end on the center film clip. You can check this by feeling the edges relative to the reel edge after you attach it to the clip. When winding on the reel, slowing spin the reel with one hand while it is on a flat surface, and put a slight cup on the film with your other hand a few inches away from the reel. But I assume you know this since you already do 35mm.