3DPrinting
3DPrinting is a place where makers of all skill levels and walks of life can learn about and discuss 3D printing and development of 3D printed parts and devices.
The r/functionalprint community is now located at: or !functionalprint@fedia.io
There are CAD communities available at: !cad@lemmy.world or !freecad@lemmy.ml
Rules
-
No bigotry - including racism, sexism, ableism, homophobia, transphobia, or xenophobia. Code of Conduct.
-
Be respectful, especially when disagreeing. Everyone should feel welcome here.
-
No porn (NSFW prints are acceptable but must be marked NSFW)
-
No Ads / Spamming / Guerrilla Marketing
-
Do not create links to reddit
-
If you see an issue please flag it
-
No guns
-
No injury gore posts
If you need an easy way to host pictures, https://catbox.moe/ may be an option. Be ethical about what you post and donate if you are able or use this a lot. It is just an individual hosting content, not a company. The image embedding syntax for Lemmy is 
Moderation policy: Light, mostly invisible
view the rest of the comments
Ideally, for jewelry, you'd use the print as a base layer that's then plated or as a positive for a mold. There are some biocompatible resins but you're still making assumptions and compromises with it.
Especially for a ring, any finishing layers will wear off directly on the skin so you'd have to account for that. Highly recommend using the print to make a silicone mold that you can then make an epoxy copy of it. Or a wax copy to then create a metal copy
Multiple steps, I know, but for safe jewelry, printers are better as a starting point tool instead of a finished product generator
There is shops that can cast a ring based on your design.
You either send the 3D model, the resin ring you printed and the make a mold from it or the wax part.
This is more the road I would go towards. You can design your ring, maybe print it and try it on for a bit to make sure it's the right size, iterate of necessary and then have it casted for you.