All;
I finally have had a chance to try this out. My subject is the Dragon 234/2 command vehicle. I'll skip what has been done and what I am doing as I wanted to get a chance to do this hairspray thing after a lot of posts and discussions. To summarize how I got here:
Vallejo Acrylic White Primer
Base coat of Tamiya XF-60 Dark Yellow
Liquitex Gloss Varnish
These three were all airbrushed
Next I hand painted Vallejo's german gray on the exhausts and mufflers to simulate some chipping (now hard to see but provides a gray tone to the background)
Then I hand painted some Vallejo light rust.
Then I hand painted some Vallejo dark rust.
I let things dry and sit for about 4 days.
I then used some TreSemme hairspray in the small spritz bottle and applied it. I got too much so I wiped some off. When it was touch dry, I used the hair dryer on low for about 20 seconds.
I then mixed up some Vallejo Dark Yellow, Vallejo WWII German Camo Beige, Golden's acrylic medium, and a drop of FloAid to get a thin dunkelgelb close to the Tamiya XF-60. I did this as I wanted to see how the Vallejo would do with the hairspray method. I dialed down the pressure to about 14 psi and put about three very light coats on the area. When I was done you could still see a dark rust tone underneath the dunkelgelb.
I waited about 2 or 3 minutes and then using warm water and a chiseled angle brush began to wet the brush then use the brush to get the paint to peel. I did not really soak the surface as much as I used a damp brush. I had read where Vallejo has the tendency to flake off in large chunks compared to Tamiya. You can see from the pic that I did not experience that. More on point I found that the paint came off very smoothly almost as if it was fading. there were some flakes but not that many. All in all for a first go I like the results.
Sorry for the somewhat "crazy" method, but I am trying to see what works and what doesn't. Caveat is that this is what worked for me and I am no expert.
Here are some pics from the start to the end: