Microscale's Micro-Adhesive is a Foil Adhesive and is a very easy and inexpensive way to apply aluminum foil or Bare-Metal Foil.
The most common foil is ordinary household Aluminum foil, which most people have in their homes.
This can be used for parts also.
It will not craze clear plastic or tend to warp thin plastic parts like other cements can. Since it will not “lift” most paints, it can be used to repair models without repainting.
Using a small Polyester bristle brush (it won't shed hair), apply as thin a coat to the backside of the foil. Household foil usually has a dull and a shiny side, coat the opposite side of the one you wish to use. Let dry 15 minutes or until the adhesive is clear, not milky. Try not to let anything get on the tacky Micro Metal Foil Adhesive at this time.
Place the metal foil with the tacky side down, on the area you wish to metalize, as flat as you can so as not to trap air.
Using your hands, carefully press the foil to the surface. You should start at the center and press to the outside. Start out very gently at first and then a little firmer but not pressing too hard. When finished, use an ordinary cotton swab on a stick, and work over the areas you have not secured down.
When you have the foil conforming perfectly to the model surface, cut the excess away with a sharp pointed hobby knife
On highly detailed models this process might not be enough, you will then need some wooden tooth picks to finish. The round kind works the best for most models. Here you will have to be most careful because if the tip of the toothpick is too sharp, then you could gouge the soft aluminum causing a tare.
1 oz plastic bottle, by Microscale.