Before the oils I tend to apply a filter. A filter is a very very thin wash over the entire surface; its job is to bring all the colours together and get a nice grimy finish. For this model I used AK Interactive Winter Streaking Grime which is a grey green tone which works well. Sorry for the lack of photos, when my battery is getting low it doesn’t save the images. Here is an image from a Gekko I made a few months ago.
The first stage of the weathering is working with oil paints. I prefer weathering with oils as I find the blended effects are very realistic and much easier to control than say using pre shading. My favourite oil paints I like to use are from Abteilung, they seem to contain less linseed oil which makes them faster drying and more matt in appearance although sometimes I will mist on some matt varnish on occasion. Usually I won’t bother though as the oils leave the surface with a nice realistic smooth metal effect.
I tend to put a small blob of the oil paint onto a piece of scrap card, this will draw out the linseed oil making them dry even faster and be more matt. I say even faster but it will still be a day or two before you can use thinners over the top with confidence hence sometimes I will mist over some acrylic matt.
You will need a selection of brushes, some white spirit (in this case AK Interactive) and some kitchen roll to wipe the brushes on.
The first stage is to dampen the surface with white spirit, this is important on a matt finish otherwise the oil paint can stain the surface which is not what we want.
Next we take a small brush and place tiny dots of the oil paint onto the surface. First up I like to do the fading effect so white, buff and yellow are used. Yellow over a green base is nice because it makes the colour warmer, white alone can result in a chalky finish. Bright green is also useful in creating chromatic richness.
Taking a damp (ever so slightly damp) flat brush we slowly work the oils into the surface. Try not to mix the paint as otherwise we’ll get a filter effect; we just want it very localised in order to get a gently marbled finish.
To finish we take a large soft dry brush and finish off the blending.
Next up it’s the low lights. Shadow Brown and Cobalt Blue are used here, note the areas where the oil paint is places, along raised detail in shadow areas and along panel lines. This effect will enhance contrast by creating false shadow, also it adds to the grime.
Again the oil paint is blended, first with a slightly damp flat brush and then a dry round brush.
Here is the finished effect on the centre panels. Note it’s very subtle but that is exactly what we’re after.
When you’re using this effect try and use a bit of thought to how the real aeroplane may have weathered. Here I am using a heavy effect of lightening the 2 outer panels but I painted the centre panel in a darker tone to simulate a new panel hence the fewer dots here.
The Hinomaru doesn’t escape. Red and Mid Rust are also used. Note how the paint has been applied along the surface detail, this will help to distinguish panels and create a more interesting surface for the eye to look at.
Again oils are used to create highlights and shadow to pop out the surface detail, in this case the wing root fairing.
Here is the finished top surface. The effect is very subtle which is just what we are trying to achieve. You’ll note also I haven’t used a panel line wash. I think you’ll agree that this is not really necessary as the oil fading has done the job quite nicely. If you wanted, you could run a very thin subtle wash in the panel lines in the grubbier areas such as around the engine but it shouldn't really be necessary.
Oils can also be an effective way of simulating engine oil leaks. All radial engines leak oil, some more than others. I couldn’t find any photos of a Kate showing the underside so I’m not sure if there were any typical patterns so please excuse the artistic license here.
First off, the oil is drawn in thin lines with a small brush. Try and be inconsistent with the length and distribution of the lines.
Next, with a moist flat brush, blend the lines. Keep going until you get the desired finish. Don’t worry if you remove too much, you can also go back and repeat the process.
Here is the finished underside showing all the effects so far. Nice and grubby!
Ok, that’s it for part 6. Hopefully I’ll have part 7 up tomorrow so stay tuned.