Soldering really is very easy. All you need is a bit of confidence
and someone to demonstrate it to you. It sounds as if you don’t have a
"guru" to take you through the process and I’m sure, as soon as you’re
shown how to do it, you’ll feel perfectly confident. It will add
enormously to your range of possibilities. Copper and silver can be
sweat soldered together to make a permanent bond, the piece can be
pickled clean and, if you like a natural finish, there are many ways
of accelerating this process.
Epoxy really doesn’t last. It will be OK on one piece and on the next
it won’t hold - and there’s no way of telling which is which.
In a similar way it’s really quite simple to make good settings for
stones that are permanent and look “finished” in a way that glue never
Copper oxidizes easily and you’ll never stop it doing that - the
green color on your skin is formed from copper salts that get
absorbed. There is a sneaky fix to this. Cover the copper with clear
nail varnish or a similar coating.
Once more - let me persuade you to learn basic jewelery making
You’ll be so pleased with the skills.