Well actually I have made a bunch of these at various times. None of them at the original scale. These ones are somewhat bigger (30mm high) and have been printed for use in a stop motion video (all about safety).
Some time ago I also used the barrel model to make some larger barrels (about 80mm high) to be carried around by Lego mindstorms robots in some workshops I was running.
Thanks Dutchmogul, your design work is awesome.
Undercoat - black metal primer
Top coats - House paint test pots, and some quite anemic metallic silver paint.