By far, looks like an enlarged photograph. But it is not. Andrew Myers, artist born in Germany, spends hours planning his creations, made essentially with screws. Equipped with a screwdriver, it calculates how much the piece must be embedded in the mold, creating a three-dimensional effect. The finish is due to the painting. It's worth checking the result, bellow:
Taken from: http://revistacasaejardim.globo.com/Revista/Common/0,,EMI220160-16940,00-RETRATO+METALICO.html
Metallic Portrait: Patience and Perfection!