How to re-spool 120 film onto 620 spools 11 March, 200711 March, 2007 Nicolai Grossman Camera Hacking & DIY Glenn E. Stewart shows you how to re-spool 120 film onto 620 spools so you can keep shooting those older cameras. Excellent instructions with photos of each step. He’s got good info on other photographic topics on the rest of his Web site, too!