This is a zip toggle I designed to replace the one that broke on my jacket. I have seen a lot of replacement zippers here on Thingiverse and even tried a few but they were never strong enough. Paperclip based ones rusted and broke and ones with a plastic loop snapped too easily.

This one uses an arm stolen from a bulldog clip. This is much sturdier and easier to fit.

• Just squeeze the arm together to release it from the clip.
• Thread through the remains of the zipper.
• Squeeze the arm together and fit the printed toggle.

Easy.

Hopefully this will be useful to others. I have made this a customizer compatible thing so that the dimensions can be altered to your liking.