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I bought my first spray gun (badger 250) for basic vehicle base coats.
As I only have 10 or so tanks to paint (Eldar) I bough the air cans instead of investing in a compressor.
Anyway, I could not get a good spray to come out.
I'm using Dark Angel Green and I started with a near 50/50 mix with purified water and added water from there. Too bad GW doesn't sell this spray anymore.
It mostly sprayed spotty, and would often spray for several seconds then no paint would come out.
I cleaned the nozzles and thinned the paint and tried again and again until the paint was finally too watery to work with.
I did read another poster having issues with the regular Citadel paints.
The problem is most assuredly me. But I have no experience with airbrushes and need some advice from more experienced persons on what I am doing wrong.
With an air brush a compressor is vital. You will need a good, solid 30-40 psi. You can find a 1.5 to 2 gallon compressor at any home improvement store very cheap.
Unfortunately, the problem is not with your gear, but your paint. You cannot reliably spray any water based paints through an airbrush, except inks. Water based acrylics will dry as they are atomized and immediately clog the tip. If you water it down enough to spray, you have diluted the pigment and you will not be happy with the results. Some of the larger tips will do better, but acrylics are the worst to try and clean out of an airbrush and you could quickly destroy a good airbrush.
The best choice is to go with enamel (paint thinner-based) paints, such as good old model paints. The flats work the best. These can be thinned with paint thinner to come out of the finest of airbrush tips. And, you can paint over with GW acrylics over the thinner based enamel. Thin out the enamel paint about 10% thinner and this should come out trouble free. If you still get clogs, you can go as high as 20% without sacrificing the coverage.
So, always spray with enamel and you will be good!
What about the Vallejo air brand? Those supposedly go right in the gun with no thinning required. Bad idea? Someday I'll have an airbrush, and I've been reading the airbrush-related threads lately with interest.
Thirty to forty PSI?!? What are you spraying, MDSW, roofing tar? I typically spray Gunze, Tamiya and GW paints at something like 15 - 20psi with perfectly good results. I can't think of a time when I've ever gone past 30psi for any reason.
I'm definitely on the other side of the coin here - I spray water based paints exclusively, having switched away from enamels. They can indeed be a bit tricky, and they aren't as foolproof as enamels, but with a little patience, I find they work just fine... And without filling the whole house with toxic fumes, either!
If any of you do decide to spray with enamels, make absolutely sure you've got a good respirator mask, and a spray booth couldn't hurt, either - you'll be spraying paint thinner into the air you breathe, otherwise!
EDIT: Canew, Vallejo's model air line works just fine, and pretty much as advertised. Some minor thinning may of course be required, depending on the individual paints.
I've always wanted a airbrush gun, but droping that much money into a proper one, never really struck my fancy. I think the most I'd pay for one, if I had the cash right now, would be 100-150 dollars, and the last time I look, cheapest one i found was 200 dollars.
What is your ideal mixture for water base paint Wraith? paint-water, 60-40 or 70-30?
Last edited by Backdraft005; June 21st, 2010 at 12:46.
Thanks for the input. I agree that perhaps my main problem is the citadel paint. I did notice that in the GW spray gun videos they are only using Foundation paints. Thanks for the Vallejo reminder, I found a lot of great info on their site (they did mention that airbrush pigments need to be ground extra fine to accommodate the airbrush. Perhaps this is one reason the regular citadel paints have issues).
I am going to try some Model Master and perhaps some Vallejo as well. I'm painting Biel Tan Eldar, and perhaps a slightly more military dark green will look great instead of the DA Green.
I also found this great Vallejo-Citadel paint color comparison chart:
MiniatureWargaming - Vallejo - Citadel Paints Comparison Guide
To each his own on PSI - I find a slightly higher PSI helps to keep tip clogs to a minimum and atomizes the paint better for base coats. 15 PSI is way too low for my tastes for this type of painting - it can create a spittle effect at times.
Now, my detail Iwata gravity feed that I can shoot literally one drop of ink/paint through, I do run at around 20...