I designed and ordered a circuit board 2-3 days ago. This board is a prototype for project, so it will not be used in production. It is missing the soldermask and silkscreen layers, so correcting mistakes is very possible. The board was printed correctly, but somehow I missed one via from the top layer of copper to the bottom. It is pretty isolated, and the wiring is all done correctly and lines up. I just mistook the joint for a small via and didn't think twice about it before ordering (whoops).

I would like to know how to add my own via. There is no ground plane on this board, and it is a basic 2 layer prototype PCB.

Below you can find a picture of the printed circuit board front and back with the trace ends circled. They are lined up **directly** over/under each other. I need to connect those two.

**Top**
![enter image description here][1]


**Bottom**

![enter image description here][2]

The two solutions I'd imagine would work:

 1. Use a tiny drill bit or mill and drill a hole through, and make sure solder is filling the whole and touching both traces
 2. Just solder a wire to the top trace, wrap it around, and solder it to the bottom trace.


  [1]: https://i.sstatic.net/YenfW.jpg
  [2]: https://i.sstatic.net/FGY3K.jpg