Elias-- The easiest way is to find an old roll of 616 film, unwind it and throw away the old film, being careful not to tear the paper backing when you remove the film. Then, takea fresh roll of 120 and take the film out of the paper backing and attach it to the 616 paper backing with a piece of masking tape. Then carefully rewind it backwards onto the 616 spool. When you attach the 120 film, you'll put it onto the center of the 616 paper as best as you can. I've found that exactitude is not really necessary at this step. You might want to put thin pastic strips across the focal plane for flatness, but that's not even necessary for a one-time experiment. The winding problem is solved because you are using the correct paper backing for the camera. The length of 120 film is shorter than 616, so you might get one or two fewer exposures, but this works well. I have used this system, most often on 127 cameras by inserting a length of 35mm film on 127 backing paper. Taking out the old 616 film can be done in daylight, but inserting the new roll of 120 must of course be cone in complete darkness. You might want to waste a roll of 120 and try it in daylight just to practice. If you have trouble finding a roll of 616, I'm not sure but I may have one I can give to you. Let know. Marty ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.