Hi,

I've been using Tamiya acrylics for many years for airbrusing. And I'm very happy of their quality. But today after applying X-22 Clea acrylics I received a very undesirable effect: white drops over clear surface. But not on whole airbrushed surface What more- paint coat on these parts of model are rough- not glossy nor matt.
Acrylis which are use are bought directly from Japan and before painting are shaken very well.

Thanks in advance,

Michal

Well, if you have diluted in a right way, it could be a flawed paint

Have you tried to paint with brush a spare part? It would be an useful trial to see if the paint is bad. If you have the same problem, you may throw it away...

Michal,
I ALWAYS stir Tamiya acrylics thoroughly until I think I've done enough...And then I stir a bit more. I (in my early days) shook the can to mix it and eventually saw the error of my ways.
not that it matters, but the paint chart I have doesn't list an X-22 do you mean XF-22?
As Mauro says try again on something else. From your description it could be something contaminating the model's surface and interacting with the paint.
Good Luck
Tom

I know the Tamiya Flat must be mixed with paint and not applied on it's own,perhaps the same goes for the gloss.

Hi,

Thanks for fast replies and suggestions. I have a problem with Clear (Gloss) X-22 paint- not X-21 flat base.

I did a test as Mauro proposed- the final result was OK. Also during airbrushing this paint- part of the model was glossy- other rough.

Tom- I checked the surface. It happened on both surfaces: plastic and resin.

I will try to polish this surface- if not I will have to remove paint using oven cleaner

Thanks again,

Michal

My apologies Michal. I've remembered that X-22 is a clear gloss varnish.
Tom

Hi,

I think situation is under control I've polished the rough surface using soft cloth. After several minutes of work it looks much better.
I did a small research on the web. And I found a suggestion: dilution ratio. I painted 60/40 (paint/thinner) proportion. But I found on auto dg forum that for cars they are using 30/70 (paint/thinner). Later I will do a test.

Thanks for assistance

Michal

X-22 usually works very well under most circumstances.

It sounds as if you may be getting some condensation in your air hose which is "spitting" out onto your subject. Are you using a moisture trap?

If you are painting in a cold location (eg. in the garage/workshop) and then moving the model to a warmer place (eg. into the house) you may be getting some "blooming" caused by condensation from the air.

Phil,

You make me start thinking about my compressor set. I built it few weeks ago using old extuinguisher as a tank. I installed moisture trap between compressor and tank. But after reading your post I consider buying next one. I will install it on the output from the tank.

Thanks a lot for your help

Michal

Phil- You solved my problem! I've just installed second moisture trap. I started my compressor and found water in it!

Thanks a lot

Michal

I can attest to the fact that your problem was water being trapped under the acrylic clear. It dries as a white dot.

One problem using a tank rather then a compressor is that there is no way to periodically drain the tank, and they all eventually start to build up water in them from the condensed air. My compressor, like most, have a drain on the bottom to remove that water build up. A moisture trap wil keep it under control for just so long depending on the humidity levels, and thus the mosture level in the condensed air being induced into your tank.

Tanks do hold a tremendous amount of pressurized air, and one way around this problem is to have the tank filled with CO2 rather then air. There is no water induced into your tank that way. CO2 fills aren't that much more then air refills.