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.
Click on each image below to enlarge / reduce the pictures:
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!
