I was just thinking of all those auto thread projectors out there and how the leaders need to be nigh on perfect
for threading up, when it gets to the take up, it usually gets creased when fed into the slot in the spool and might need
trimming on the next showing. An idea might be to already have a length of leader, or just a strip of anything 8mm wide a few feet long already set up on the spool with a little piece of tape, masking tape is perfect, as your leader comes through, just tape it to the lead already on the spool, no
creasing to your leader on your film, result perfect for the next showing. Just a thought.