Robust Zipper pull replacement (Ratchet) — Remix with more clearance

I liked @Dominsch's original design, which feels simple and robust. But didn't see why it wouldn't work with more clearance to make the print less prone to fusing the teeth. So I did a quick reimplementation in Fusion and added more clearance. Seems to work fine. As suggested by Dominsch, I printed them with 100% infill and 3 perimeters.