Yep, I figured I'd mix it up a bit and work on some Games Workshop stuff.
So this is a tank (I think a Rhino?). I am told that this is a Chaos model so it's going to be all rusted out and nasty looking.
I started with an undercoat of brown/red/orange mix. Once that was dry I hit it with a good coat of Tester's Gloss Coat to seal in the freshness.... Well OK to facilitate the next step in the process. Once the gloss varnish had time (overnight) to cure I then applied a coating of hair spray. I use Aqua Net as its really cheap and water soluble.
Then it was time to add the main colors of the tank. I was going for a split color of white and purple. This step is critical. You need just enough paint to cover the browns, without saturating the hairspray. to do this I turned up the PSI on the airbrush and shot from a bit further away than normal (about 6 inches) so that the paint was just about dry by the time it hit the model.
I started with the white coat of paint. waited for it to dry completely, then masked off the center with painters tape. It was then time to use the purple.
I let everything dry overnight again (nobody said this is a quick process).
And it was then time to activate the hairspray and chip some paint. Doing this is fairly easy. Get a fresh cup of water, a paintbrush and something to chip the paint with. I personally use a straw that has been cut on the bias. It's sharp enough to chip up the paint, but not so sharp that it will cut through the varnish.
Here are the steps for the rust chipping.
1. take your paintbrush and get it good and wet.
2. "paint" the water onto the section you want to chip.
3. wait about 30 second for the water to get under the paint to the hairspray.
4. chip the paint gently with the tool of your choice.
5. when you are satisfied with the level of rust. dry off the area with a clean paper towel.
After the chipping is done it was time to seal the model with another layer of Gloss Varnish.
And you get something like this.
Once the Varnish cures it will be time to work on details, washes, powders and all the fun stuff to ruin a perfectly good paint job!