I have two problems where I have a small area to make a connection on a material that is unsolderable.
The first material that I need to solder on is annodized aluminum, on a 5mm x 3mm x 2 mm rectangular prism. Yes, you can solder on annodized aluminum, but it is not ideal. It seems like the connections break very easily, at least using standard solder and soldering irons.
The second material that I need to solder on is conductive plastic. Conductive plastic cannot be soldered on. Again, I have about 5 mm of space to work with.
I have tried wire glue, but, if I decide to get my product manufactured in China, will they want to use wire glue to attach to my product? Is this the best option? It seems very unprofessional, and a lot could go wrong (connections breaking, glue not being stirred enough prior to application, conductivity drying out over time (i.e. after a test procedure)).
What I would really like is something small, and clamping, almost like 5 mm aligator clips. Or, even a small, solderable paper clip.
What weapon am I missing in my arsenal?