I made this because an ebay 7 round 1911 magazine I bought had horrible quality control. The follower would sometimes get stuck midway or at the very bottom. Even a dremel to cut down the sharp edges barely helped.
I've tested this and it feeds fine. Minimal wear and tear. Slide locking fine after the last round. Inserting it and removing it is slightly trickier than the metal follower, but not too bad if you know what you're doing.
I take no responsibility if you decide to print it. I haven't had issues, but not saying you won't.
Printed on the side allows for best strength. Fine tune your support settings to allow easy removal.