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Using a Patriot 105 and Vallejo Acrylic Urethane surface primer straight from the bottle. Tends to pool a bit, but usually settles fine. I just primed a non-40k model. A 120mm Samurai. All went well except his legs. The primer pooled and formed thick drips that are terrible. The only way I can think to fix this is to sand the problem areas down with very fine grit paper once it's all cured and re-apply. Does this sound like the right way to go?

What about in the future? Am I just being too heavy handed with it? Feels almost like it's too thin, but should I not be trying to prime in one pass with my method? So far I've really liked this primer, but maybe it's the primer causing the issue? Seems to me that primer shouldn't take multiple coats, but hey, that's how paint works. Further, how solid does the coat of primer really need to be? I can see it needing to be good solid coverage when pre-shading, but when not, is just a decent dusting enough? I've only primed a few models so far with this set up as it's fairly new. So I'm still working the kinks out.

If its pooling it could be:

A: your spraying to close
B: your spraying at to high a pressure
C: Combination of both.

Im not sure if you can strip the paint with simple green but I would strip and restart the project instead of attempting to sand it down (though if your comfortable with it why not.)

I'm honestly not real comfortable stripping, especially since I don't know how it will react with the filler I used which was a significant amount.

I have the means to sand very very finely so I will probably do that, and give your other tips a try. I see I forgot to list the psi I was using in my initial post, I've been spraying about 25psi.

 Badger_Bhoy wrote:
I'm honestly not real comfortable stripping, especially since I don't know how it will react with the filler I used which was a significant amount.

I have the means to sand very very finely so I will probably do that, and give your other tips a try. I see I forgot to list the psi I was using in my initial post, I've been spraying about 25psi.

I prime at 30 psi so your pressure is fine. You cannot fully coat anything with just one pass; multiple thin coats is way the way to do it every time. You are trying to put too much paint in one placeat one time.

That was my first thought. I'll be doing multiple coats next time.