When I originally built them I just made several generic block shapes from foam core, cut out windows and doors and covered the walls with textured latex house paint (get the finest grit you can). Real basic stuff. They were painted in a sand color and drybrushed white.
Still, they weren't very grim dark or rusty enough. Thus the series of recent posts on making them into shanties even the lowest scum hivedweller would be happy to live in.
|angle iron, channel iron, and I beam.|
I use the angle iron for corners of the building (then add rivets-explained later). I use the channel iron as brackets for the electrical conduit lines running up the outside walls. I use the small channel iron for details and for adding edging to plates. Not pictured is an octagon shaped rod I use to make bolt heads as well.
For sheet plastic I use deck plating, corrugated sheet, and tin roofing sheet, all in O scale. Besides those I also use plain plastic sheet in a variety of thickness for various parts. For screens I use plastic screen for porches that comes in a big roll. It's easy to cut and use for all kinds of metal grating details such as the door on the roof below.
For the floor of this second story I added various random pieces of sheet metal with rivets as well as a few deck plating pieces, and a very thin plastic sheet to mimic hasty patches.
For the screen door cover to the stairwell I cut out two hollow rectangles of the same size in plastic sheet and glued a piece of screen to the back of one sheet then sandwiched that between the second piece of plastic to make the door. I added a handle and hinge in plastic rod.
Here is the screen door glued in place. I later ended up ditching this door because I didn't like the way it looked and it blocked the other door.
Here is the bottom floor showing the stairs and the supports that hold up the floor above it. I like my buildings to all have removable roofs.
Here is the floor in place.
I used the door from a toy truck for the awning.
The front door to this shanty fort is from the set of plastic bulkheads in the Necromunda set.
Third floor roof in place.
Interior shot, second floor.
Interior shot, bottom floor.
For the electrical conduit running on the outside walls, I use hollow plastic rod and mark where I want it bent, then warm it with a candle (it heats up FAST so be careful) then bend it into shape and let cool. I then use small pieces of channel iron as brackets to hold it in place.