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AFV Painting & Weathering
Answers to questions about the right paint scheme or tips for the right effect.
Vallejo Primer - To thin, or not to thin?
Blackstoat
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England - East Anglia, United Kingdom
Joined: October 15, 2012
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Posted: Wednesday, April 09, 2014 - 04:00 AM UTC
Hi all

I have a project which requires more subtle application of primer than my old rattle cannon.

I've decided to give it a toot with the Airbrush, but looking in the paint drawer the only thing I have is Vallejo black surface primer 74.602. (Which personally wouldn't have been my first choice)

Now do I thin that with Vallejo AB Thinner?

Is it OK to AB straight from the bottle?

Could I thin that with lacquer thinner?

If I did thin it with lacquer thinner, would it give it more bite?

Thanks

Andy

Thudius
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Uusimaa, Finland
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Posted: Wednesday, April 09, 2014 - 04:52 AM UTC
No airbrush experience, but if you do thin it, use Vallejo's thinner or an acrylic thinner. The primer has a polymer that other acrylics don't have which actually forms a film, a nice bonus. If you thin with water, the polymer properties weaken. I'm sue someone will give you airbrush ratios and so on.

Kimmo
SgtRam
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#197
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Posted: Wednesday, April 09, 2014 - 04:57 AM UTC
This is a hot debate, Vallejo states it should not be thinned to maintain its durability.

I have thinned in it the past with no issues. But if you are going to thin is, I would recommend using the Vallejo AB Thinner. I have used Tamiya Acrylic thinner with no issues as well. I have also heard it can be thinned with water. I have also sprayed it straight from the bottle, but it requires a little higher air pressure to do this.

Thudius
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Posted: Wednesday, April 09, 2014 - 05:40 AM UTC

Quoted Text

This is a hot debate, Vallejo states it should not be thinned to maintain its durability.

I have thinned in it the past with no issues. But if you are going to thin is, I would recommend using the Vallejo AB Thinner. I have used Tamiya Acrylic thinner with no issues as well. I have also heard it can be thinned with water. I have also sprayed it straight from the bottle, but it requires a little higher air pressure to do this.




If you thin with water, it weakens the polymer properties and you won't get as durable a coat. It does thin fine with water however. Acrylic thinners have something in them which doesn't affect the polymer as much. If you think about it, adding water thins the carrier and/or binder, so any properties they may have had are now more diluted. With regular Vallejo paint, this doesn't seem to be an issue but I am noticing Game Color reacting slightly differently when heavily thinned. I'll eventually get some Vallejo thinner and see what's what.

Kimmo
Uruk-Hai
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Stockholm, Sweden
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Posted: Wednesday, April 09, 2014 - 06:05 AM UTC
I dont thin it although I do raise the air pressure 25-30%.

Cheers
brian638
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England - West Midlands, United Kingdom
Joined: July 24, 2004
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Posted: Wednesday, April 09, 2014 - 06:53 AM UTC
I'm with Janne,

I use the Vallejo Surface Primers and I don't thin them, I raise the pressure slightly for all of them except the white and light grey.

BRIAN
Blackstoat
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England - East Anglia, United Kingdom
Joined: October 15, 2012
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Posted: Wednesday, April 09, 2014 - 07:39 AM UTC
Took your advice guys. Gave a toot at high pressure neat and it looks just fine

Thanks for your help

Andy
ejasonk
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Baden-Württemberg, Germany
Joined: October 14, 2007
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Posted: Wednesday, April 09, 2014 - 08:58 AM UTC
No need to thin.


Use high pressure as it was told and start first with a very light coat, just make the surface fogy, then build up in layers. This primer is very uncomplicated
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