Step 1: Preping
Step 2: Outside project
Step 3: Now pack to main project
Step 4: Dry brushing
Dry brushing is done by loading up the paintbrush with the paint you want to use and then getting rid of most of it. Just wipe the brush on a paper towel until pretty much nothing is coming off of the brush anymore.
Then, swipe the brush over the area you want to detail. It should pick out the raised details with the little remaining paint and help them stand out. This can be done with control panels and even raised panel lines.
It's a really nice way to make the detail in a kit show itself. If you want to use it to make a kit look dirty, don't wipe as much paint off of the brush as before. When you wipe the brush over the kit large streaks will appear. This is great for areas that see heavy wear like tank treads, or the bottom of walker feet.
Like everything else this takes some practice to get used to. I just used the spray paint already used and spray them into PAPER (not plastic learned this the hard way!!) cups then dripped some of the paint on a disposable surface. (as shown)
Step 5: Techniques
This is done through several different methods. If you want an overall dirty look, liberally apply the wash all over the model. It will pool in some areas and flow into others. This should give you an overall grungy dirty look.
If you want it just in the detail areas, first coat your model with a Gloss spray. The apply the wash only to the detail areas like panel lines. It will automatically flow into them because of the gloss finish.
Once it has dried the details will stand out and you can dull coat the model if you want. You can also use wash to specifically detail certain areas. Say there is an oil leak or some kind of other outlet that gives off nasty stuff. You can place a good drop of the wash in the area where it exits and let it run in the natural direction or you can taper it with your brush. later on I'll update this tutorial and show you this technique.
Step 6: For go geters
I like to use it to do details only because airbrushing is a lot of work and for covering large areas you can just as easily use an aerosol can of paint as long as they make the color you want. Airbrushing is far superior to hand painting and even aerosol cans. It makes a nice even coat that really can not be matched.
If you use an internal mix airbrush as opposed to an external mix airbrush it will make an even finer coat. I did not have an airbrush for the longest time so most of my old models are hand painted. I now use a Badger 175 airbrush that came with 3 separate needles and tips, Large, Medium and Small.
Large is good for thick paints and wide coverage. Whereas the Small is better for thin paints and fine detail work. Thinning down paints to be used in an airbrush. All paints are different so you must experiment to find what works bets. Finer quality paints take less thinning whereas lower quality will often take more.
This is because the pigment in the cheaper paints is not as finely ground and needs to be broken down. For thinner based paints you can use specially made airbrush thinner. This makes for a nice clean breakdown. I usually use very little thinner because I like a nice thick coating. I'll probably use anywhere from 1 to 2 parts thinner to every 4 parts paints. For water based acrylics you can use water to thin it down but that doesn't always work very well. You can actually use windshield washer fluid to thin it out. Don't worry about the color, that won't make a difference.
I usually use the same ratio for thinning acrylics. Like I said, all paints are different and depending upon what tip you are using, different amounts of thinner are needed. I suggest just experimenting. If the paint won't come out at all, use more thinner. If the paint flies out and runs everywhere or is transparent, use less or add more paint. To make an airbrush work, you need a source of pressurized air.
You have a couple of choices when it comes to this. You can use small tanks of compressed air, but those are expensive, run out fast and lose pressure when you are using them. You can also use CO2 tanks like what they use for paintball. This is very similar to the idea of the air tanks but you can refill them pretty cheap. The other choice, and the one that I use, is to get an air compressor.
The advantage to an air compressor is that it is a constant source of air that can automatically refill itself. Make sure you get a compressor with an attached air tank. If you don't, the airflow will fluctuate and not work as well. The other good thing about getting a tank is that you can fill it and then airbrush in silence until it runs out. The only disadvantage to compressors is that when they have to refill themselves they are kind of loud. Other than that they are the best choice.
If you live in a warmer/moist environment make sure that you get an in-line moisture trap. This filters moisture and other particles from the airflow before it gets to the airbrush and ruins your paint/tool. Cleaning your airbrush is the most important thing to do when you are done using it. If you don't it will die very fast.
Make sure you expel all remaining paint when you are done and run lots of appropriate thinner through it. After that, disassemble it if possible and clean all parts by hand. Your specific airbrush should have care instructions in the manual. you can buy a very nice but cheap airbrush here:
again maybe later on I will add more to this tutorial.