Print settings should have no top or bottom surfaces.
Add a decent amount of perimeters for strength as well.
Here's the link to the jump rings used in the project.
https://www.amazon.com/gp/product/B09185XXWH/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
3in_hex.stl | 32.5KB | |
5in_hex.stl | 32.5KB | |
7in_hex.stl | 32.7KB |