Pocket Snaplink Print-in-Place Carabiner
Created yesterday
Description
A compact, D-shaped snaplink in the spirit of the little accessory carabiners that hang off backpack straps and key rings. The 70 mm body carries a pivoting gate and a thin flexure spring that nudges it shut, all printed together in one go. Pop the gate open with a thumb, slip a key ring or bottle loop in, and let it snap back.
Not rated for climbing or load-bearing safety use. Keep it to keys, bottles and bag clips.
Design notes
- Size: 70 mm long, 38 mm tall, 8 mm thick.
- Gate: hinged at the right end, swings inward about 32° for a roughly 12 mm opening.
- Spring: a 1 mm living-hinge arm along the bottom wall returns the gate to closed.
- Print-in-place: 0.5 mm clearance gaps around the gate and spring, so no assembly is needed.
- Material: PETG is recommended for the flexing spring arm. Work the gate a few times after printing to free it.
- Tuning: if the gate sticks or rattles, adjust the clearance for your printer. The spring thickness sets how stiff the gate feels.
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