Small Oil Tank – Part III

Rust and Oil .. with Oil
… with oil paints that is. I used Burnt Sienna and Lamp Black. Not because they are the perfect colors .. but because that is all I have in those shades. I picked up a set of 10 tubes of cheap oil paint at Wal-Mart .. which work great for this kind of thing. I thinned with turpenoid as needed.

Leaning against the tank are the bents. I need to add nbw while they are loose .. trying to add them after you assemble the structure will drive you nuts. (ok. Short trip for me ..)

The idea is to get the surface to look rusty .. which means different shades of orange to brown to black .. and at the same time the surface has been stained over the years by spilled oil. This won’t be the main surface showing though.

This will be an ‘undercoat’. Once the oil dried .. as thin as this ito took overnight is all .. I sealed the surface with a matt spray. Once that dried I sprayed on hairspray. This acts as a water soluble resist. That means that I can cover the tank with the ‘tank color’ .. and then use a brush and water to dissolve and tear and peal away that paint to revel the rusted surface underneath.

Finally – paint
The next morning after letting the thin oil wash dry overnight I sealed the surface with some matt spray (Modge Podge Matt Clear Acrylic Sealer – from WalMart of all places). When that had dried I sprayed on a couple coats of TRESemmé hairspray and let that dry. Finally I sprayed the paint. I used my favorite industrial color .. Testor Model Master ‘Pale Green’ Acrylic.

Whatever paint you use it helps that it’s water-based since the next step will be to selectively remove it using water. The idea is to dissolve the underlying hairspray so the surface paint can be flaked and worried away.

I have since found that what is important is that the paint doesn’t form a ‘latex like’ skin. That would create larger flaking. Enamels .. or water based paints create smaller, more scale flaking

Chipping
Spent a bit chipping the paint. This involves wetting the surface and then poking at the softened paint with a toothpick and various brushes. Think this about right (or .. about as right as I am going to get). I let this dry. The next step will be using some rusty weathering powder across the top .. that should help to bend the paint and rusty bits together.

Weathering Powders
Felt that the chipping had left the contrast between the paint and rusty/chipped areas too stark. Rust and weathering is more subtle then that. I used Doc O’Brian’s weathering powders in various reds, browns and black to help blend everything together. Think .. that I need to stop for now. I can always add more weathering but it’s not that easy to ‘un-weather’ the thing.


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