Replacement latch/clasp for a small, cheap fly box commonly sold by amazon, ebay, and some fly fishing shops. The boxes are a nice small 'shirt pocket' size but often suffer from broken latches. These are too cheap to try to return but nice enough to try to save, I designed a replacement C shaped clasp to keep the box closed. Thought others might have the same issues. I tethered the clasp with a small section of fly line backing (bead optional but provided in the models). PETG was used but PLA would probably be fine as well.

Fusion project included.