Hello! I'm very new to electrical engineering and I wanted to ask a question before I attempted something potentially dumb. One word answers are acceptable here! :) I'm eager to learn so any longer explanations are welcome too.
I need to connect this arduino to this slab of metal jewelry so that it's secure enough for me to plug and unplug a USB in without shearing the arduino off the jewelry. I was going to solder it directly on (and probably use a few more pins elsewhere to stabilize). I don't know what type of metal this surface this is, but I know it's non-magnetic (guessing it could be copper of some sort, though potentially it could also brass or bronze I think? I found this jewelry on the side of the road).
Anyway, I was wondering if this could potentially cause a problem - like a short-circuit. In the picture, I have a battery pack and an arduino connected by these 3 pins. The middle pin is the ground, and the right-side pin is the battery input (sending voltage from the battery pack into the arduino), and the left pin sends voltage from the arduino USB to the battery pack. All 3 would be soldered to the metal in this scenario (assuming the soldering goes well!).
Thanks for your help!