Printing in PETG at 100% infill and heating up the clip to bend it fully closed wasn't enough to make the clip hold onto the visor as the heat expanded it the width of the visor. I added teeth to help the clip grip the visor after it loosened up from the heat. Now it doesn't fall off when moving the visor.
Print in PETG @ 100% infill. I'd suggest heating up the bends with a lighter and holding them compressed till they hold form. If you live in a hot climate, they will still loosen to the width of the visor they are clasping but the teeth will help grip the visor.
Remixed from: Sunglasses Car Sun Visor Clip V2 by trevorlong | Download free STL model | Printables.com
The author remixed this model.