Parametric Zip Toggle (Zip Puller, Zipper Pull, etc.)
Features key part to lock the loop into place, so it stays together even when being pulled forcefully.
Replacement part, or can be attach to existing zipper toggles to make them stand out visually, mark them in different colours, give a better grip, etc.
Depending on how accurate your printer is, you might need to adjust the parameter:
- w_tol ... Width Tolerance of Grip
Good values are:
- 0.3 for an accurate printer
- 0.5 for an average printer
- 0.8 for a printer that does a lot of overextrusion
The three pre-rendered STL files for download are identical except for the tolerances. The file name tells you which is which.
(Thanks to https://www.thingiverse.com/blackboots for testing different tolerances!)