i wonder which "plastic" (nylon, abs ...) material i may use for outdoor usage; ideally this material would have an "as-smooth-as-possible" surface (and probably even different colouring options; ... or/and ... can i use lacquers/surface finishings to impregnate materials? please accept my apologies for this amateurish questions ... am a novice to 3d printing!
I wouldn't leave any of the plastic materials outside without treatment of some sort. Check out the Post Processing part of the forum for lots of hints on how to protect your models from the elements.