Q: Why did the puller detach from the slider body?
Puller detachment can be a weak assembly or a load the slider was never designed to carry. Checking the break and the way the garment is used will show which, before either side is blamed.
- Photograph the slider and puller at the joint, close enough to show the fracture surface.
- Check whether the puller loop is open, the rivet is missing, or the body has torn.
- Ask how the garment is used, because a puller used as a grab handle sees far higher loads.
- Test a sample puller with a slow pull and note the force range at which it opens.
- Compare the failed part with a spare from the same lot to see whether the shape has changed.
An open loop or a missing rivet on new stock is an assembly defect. A torn body after repeated hard pulling is a use or design issue. Record the use case and the pull direction, because that record changes the specification that will solve the problem rather than just replacing the part.