Originally posted by sgdiehard:
I have the F15, F16, A10, A4, and Apache, now turning to tanks, working on M1, Challenger2. Anybody know how to do rusting or aging with spray painting?
for rusting effects, first you spray red brown on the model then you over coat it with the body color. After that you get a fine sand paper, maybe grade 1000 slowly sand until you see the red brown.
If not, undercoat with red brown then use your air brush and paint a few small thin coats
For some dust effects, you can attempt preshading or post shading. For pre shading, spray black lines on the model first. I.e on the edges, panel lines, rivet lines, on the engine cover etc. After that you spray the body colour. So you have a darker tone and a lighter tone.
For post shading, you spray the body color first, then you use your air brush, and spray a mixture of 1 part black and 10 part tinner on the lines. Sounds easy, but your hand must be very steady. Practice on a waste plastic first.
And to replicate sandy dusty effects, take brown pastel chalk, or yellow pastel chalk, grind it into powder. You can either brush (hand paint) the powder dry on the vehicle or you can mix it with soap solution and do wet brushing. It looks nice, but your model will be very fragile to touch. So try to spray a layer of dull coat.
To replicate mud effect, take some clear paint, mix it with chalk dust until you get a goooey effect, then hand paint on the mud guards, tracks, wheels etc.
Finally, don't forget to darken your panel lines. One method is by washing. If you are using lacquer based paints, you can just use a mixture of 1 part black and 10 part tinner but one drop of it on the panel line and see it run through via capillary action.
If you are using enamel paint, spray a layer of gloss coat on the model first, then do the washing as stated above. After that spray with dull coat.
Another method is to use a dark pencil, about 6B or 7B and draw along the lines. After that spray with dull coat.
I don't reccomend using those gundam fine markers. Makes your model damn cartoonish with those extra black panel line.
The shading method and the panel lines will bring out alot of details on your model.
Finally, don't forget to have fun.