Copper wire and plastic or copper wire and copper wire between how to bond, can do prison and fine?
If your copper wire is copper, no paint has a consequence, your copper wire in the air will change color, so recommend you use yellow copper wire, looks luxurious. If you are spraying paint does not matter, so the electric soldering iron does not matter, when welding as far as possible smooth welding, solder a little less.
If you don't paint, you can buy the kind of AB glue, its color close to the color of copper, but must be on the cross section, not on the periphery or will be very ugly, and copper with copper contact surface, one side is flat, one side is semicircular, so be sure to use the small semicircle file section the file in a semicircle, or when you glue it will not very good-looking.
In fact, 0.5mm is thick enough, you can put the contact surface of the file with the ladder bar bar flat point, do not go to bars outside the file, and then use the pistol drill a hole, not wearing. The bar is inserted into, so you do out of the ladder is close to perfect. But it takes a little bit more time. If you want it fine, you'd better do it, and it looks like a handicraft later. Now the drill bit diameter can have 1mm, if your is 0.5mm, use 2.2 of can.
