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Rusting, Chipping and Weathering

Onward to the motor!!
After laying down some clear coat it was onto the AK Worn Effects as I went to town on the forgotten power plant.

I decided to use some Tamiya Flat Red to add a touch of color. Most of this will most likely not be seen but I know it there and the tiniest of accents sometime will surprise you.

You can see I left the manifold areas where the heads were installed, untouched.

Now we need to chip, chip and chip away again. Taking a small tipped brush I applied a little warm water mixed with a touch of thinner to the freshly painted motor.

Following the same process on other parts of this kit, I used a stiff bristled brush and lightly stabbed the painted section of the motor trying to hit areas that I think would show through the rustiness below.

You can see the depth from just this chipping and it only will get deeper.

I need to dirty up the motor and make a little bit of greasy, oily mess, glue some parts together and add some more layers to the cab and frame.
Beginning where I left off, I moistened the molded exhaust section with spirits and began to add some pigments. To change things up a bit, I am using some K4 True Rust for starters.

True Rust is nicely colored. I say this, because it is a pigment made from actual rust. I repeated the same process of spirits again and then added a couple random dabs of K4 Rust, which is slightly lighter to the reddish orange scale.

We need to add the dirt and grime in the corners. Now, on a working engine, there may be more dusty areas that have more fresh that are wet with oil. For this, the motor has been neglected for a while and will have some oily sections but most will be oil stained dirt and rust.

Starting with some AK Dark Earth and Engine Grime, I made a sort of slurry. This will be applied in to the corners.

You do not have to have the Engine Grime. Similar slurry can be created with Burnt Sienna and Paynes Grey oil paints.

Mixing the two will give the grimy color and the oil is thicker and can fill the cracks on the engine nicely. You can even add any dark pigment to the oils as well. This will give the oily dirt effect. By adding some spirits to the oils you can make the oily grime wash as well.

Make sure to dab the grime mixture into the tight corners and areas that oil and dirt would have collected.

Next I felt I needed to add a little wetter looking oil staining. I have a couple choices, AK Engine Oil and K4 Old Engine Oil. Again, this can be achieved with the oils. Don't wick the oils out on cardboard but rather leave the oils still with the pigment. This will keep a bit of shine to the mixture leaving a slightly damp appearance.

I still have a couple more little things to add here, but basically that is the engine block!
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