Greetings from N.J.

I use mostly createx products, mostly wicked and illustration. Though I love them, I will say honestly, thinning and getting a good flow is a bit of a black art. Createx have astounding pigment load, but they can vary in thickness bottle to bottle, even with the same color, especially the wicked series, and also, what works well for one won't quite work for another person, and depending on the volume of air your particular brush moves, as well as the pressure you want to spray at, introduces even more variability. You'll need a bit of fiddling to zero in on what works for you.

Straight createx can be thinned by water BTW, but will take some extra time to dry. If you don't have a dedicated reducer available, you can mix 2 parts water, to one part each of glass cleaner and alcohol, and a drop or two of dish soap (2 or 3 drops pure gylcerin from the drug store skin section works even better). Mix it up in a bottle and use as needed.

When you are starting out, don't mix in your airbrush cup. You can do that later when you are more comfortable, but start mixing in other containers. I have a stack of little medicine cups from the dollar store that work perfect for this. Put your paint in, and then a drop of reducer at a time, until you get something slightly thicker than skim milk. Let it sit in the cup for about 5 minutes to even out and any reducer or water to do it's work.

Using a dropper, drop a couple of drops of you mix into your airbrush and do a couple of test sprays. See if you like the result and get a good flow.

If the paint breaks - i.e. you get sandy texture, or it runs, then it is too thin. add a drop of paint to your mix, mix it up and try again. If it doesn't flow nice, it is too thick, add a drop of your homemade reducer.

You will find that after a bit of back and forth you will find exactly what works for your style, pressure and airbrush. You'll start to know, just by sight what thickness works for you.

As you get more experienced, you will probably start to work closer, at lower pressures with thinner paint. The beauty of createx is that you can do this. You can thin it down to dirty water and still get reasonable coverage at low pressures, or move it super thick through big guns for quick coverage over a broad area. The downside of them, is that they take some getting used to in terms of thinning.

You might also want to consider stuff that sprays right out of the bottle when starting out. Golden high flow, and e'tac are pretty good for this.

I'd wait to use enamel until you are more comfortable, simply because of the long drying times between coats, and the cleanup. Also, the transport (solvents in the spray) are not the safest things to be breathing without an organic filter mask. Urethanes are also easier to learn on, but again, mask up.

In fact, any time you spray anything into the air, you should be wearing a mask. We only get one set of lungs, and it is a generally good idea not to be abusing them unnecessarily.

Createx can work well for models (I've done whole armies of warhammer 40k minis with them), they are tricky to get to grips with as a beginner. Worth the pain in the long run if you work through the mixing pains tho. That is true of any paint system however. There are always learning pains getting to grips with any system, and we all have different inclinations. What works for some won't work for another.

For now, mix in containers other than your airbrush's cup, start with some homemade reducer (recipe above), mix up a small cup of slightly thicker than skim milk color, and experiment, adding paint or reducer, until you get something that works, and figure out what consistency is in your comfort zone.

For plastic or metal models, best results come from multiple, very light coats with plenty of dry time between coats.
 
I’m a little confused which Testors paint you’re using so I’ll offer info I found on both.

Model Master Testors Enamel Paint
Gloss; 3 parts paint to 2 parts thinner
Flat; 3 parts paint to 1 part thinner,
Air pressure setting should be around 20-25 PSI
Enamels require 48 hours for a full cure
Thinner: - all enamel solvents

Model Master Testors Acrylic
Most Model Master and Testors "Acrylic" paints are pre-thinned for airbrushing. Thin paint by adding thinner drop by drop, until your consistency has been achieved.
Air pressure should be approximately 18-20 PSI
Acrylics will dry to the touch in minutes; they require 24 hours for a full cure
Thinner: - all acrylic thinners

They were found on the testors website and it seems they use the Aztec airbrushes so again, I don’t know the needle size for those particular brushes.

A general rule is that in order for paint to flow through an airbrush it needs to be the consistency of light milk (or less)
As a general FYI:
- don’t add thinner to your paint bottle. Always mix in a seperate container or in the airbush cup itself. Adding it to the paint bottle will reduce the shelf life of your paint leading to costly replacements.
- reduce to manufacturer specs, use recommended PSI and reduce further if needed.
- don’t spray from a great distance, your paint will dry before it hits your substrate (your model in this case) and probably leave a gritty looking appearance
- ALWAYS test spray on something other than your project... an old glass photo frame is great if you are going to be painting on hard surfaces, you’ll soon find out if your paint is to thin or your psi is to high by the spidering that happens if either of those two are out of the airbrushes happy place.

I realise we can seem a little vague at times but unfortunately there is no set recipe for airbrushing. What works for me here in Australia will likely not work for you up in the northern hemisphere. Humidity plays a part in this too :(

Thanks so much JackEb,
I purchased Testors Acrylic Finishing Sets Paint Kit, Multicolor, (https://www.amazon.com/dp/B0006MZOK8/ref=cm_sw_em_r_mt_dp_U_MGhHEb2AF9KV2) and Testor Corp. Acrylic Airbrush Thinner, I was going to search for Testor airbrush pressure today, but you have saved me the trouble once again!
Yesterday I had some better results with the Testors and my .2mm PointZero brush spraying on a plastic picnic plate, I do mix in the brush bowl, I was testing the mix ratio started with 1-1 ratio (paint to thinner) then 2-1, 3-1 and so on, I was spraying at aprox 4 to 6 inches from the plate but was having issues determining the correct pressure, I was trying to pain at about 15 psi, but found it inadequate and think I ended closer to 20.

I have ordered the new Iwata Revolution CR-3, from what i've read and watched I think it will fit my needs and I assume it will perform better than the PointZero, I think the compressor I have will be adequate, a holding tank would be nice, but that can come later if needed.
Kind Regards,
Santa
 
I’d add that you test spray your 3D printed objects too.. maybe you had one that didn’t work out as planned ! Is it possible that it won’t take airbrushed paint without some sort of prep

Right! I have plenty of scraps ;-) and actually started out on them, once I figure out this mixture stuff I will be practicing on those pieces. So far for the few items I did paint (it was a painful process) they did not require any primer (if that's what you mean by prep) but for all I know they may have come out better if I had used some!
 

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I use mostly createx products, mostly wicked and illustration. Though I love them, I will say honestly, thinning and getting a good flow is a bit of a black art. Createx have astounding pigment load, but they can vary in thickness bottle to bottle, even with the same color, especially the wicked series, and also, what works well for one won't quite work for another person, and depending on the volume of air your particular brush moves, as well as the pressure you want to spray at, introduces even more variability. You'll need a bit of fiddling to zero in on what works for you.

Straight createx can be thinned by water BTW, but will take some extra time to dry. If you don't have a dedicated reducer available, you can mix 2 parts water, to one part each of glass cleaner and alcohol, and a drop or two of dish soap (2 or 3 drops pure gylcerin from the drug store skin section works even better). Mix it up in a bottle and use as needed.

When you are starting out, don't mix in your airbrush cup. You can do that later when you are more comfortable, but start mixing in other containers. I have a stack of little medicine cups from the dollar store that work perfect for this. Put your paint in, and then a drop of reducer at a time, until you get something slightly thicker than skim milk. Let it sit in the cup for about 5 minutes to even out and any reducer or water to do it's work.

Using a dropper, drop a couple of drops of you mix into your airbrush and do a couple of test sprays. See if you like the result and get a good flow.

If the paint breaks - i.e. you get sandy texture, or it runs, then it is too thin. add a drop of paint to your mix, mix it up and try again. If it doesn't flow nice, it is too thick, add a drop of your homemade reducer.

You will find that after a bit of back and forth you will find exactly what works for your style, pressure and airbrush. You'll start to know, just by sight what thickness works for you.

As you get more experienced, you will probably start to work closer, at lower pressures with thinner paint. The beauty of createx is that you can do this. You can thin it down to dirty water and still get reasonable coverage at low pressures, or move it super thick through big guns for quick coverage over a broad area. The downside of them, is that they take some getting used to in terms of thinning.

You might also want to consider stuff that sprays right out of the bottle when starting out. Golden high flow, and e'tac are pretty good for this.

I'd wait to use enamel until you are more comfortable, simply because of the long drying times between coats, and the cleanup. Also, the transport (solvents in the spray) are not the safest things to be breathing without an organic filter mask. Urethanes are also easier to learn on, but again, mask up.

In fact, any time you spray anything into the air, you should be wearing a mask. We only get one set of lungs, and it is a generally good idea not to be abusing them unnecessarily.

Createx can work well for models (I've done whole armies of warhammer 40k minis with them), they are tricky to get to grips with as a beginner. Worth the pain in the long run if you work through the mixing pains tho. That is true of any paint system however. There are always learning pains getting to grips with any system, and we all have different inclinations. What works for some won't work for another.

For now, mix in containers other than your airbrush's cup, start with some homemade reducer (recipe above), mix up a small cup of slightly thicker than skim milk color, and experiment, adding paint or reducer, until you get something that works, and figure out what consistency is in your comfort zone.

For plastic or metal models, best results come from multiple, very light coats with plenty of dry time between coats.

Kim,
Thanks for the reply, you have very good points which I will consider. I will definitely checkout the Golden high flow, and e'tac paints.
The enamel paint came with the model from my son, I was not planning on spraying that which is why I purchased the same color palette in Acrylic.
I was mixing in separate containers, I purchased 150 of them, but am waiting on the droppers so for now I am mixing in the brush cup, just seems less wasteful, also always use a respirator, purchased long ago when I started 3D printing for some of the smoothing products I use and when spraying with a rattle can. I did order the suggested Createx thinning and base products per the bottle and will see how they work out once I have them all in hand.
These were my first painted pieces, came out "ok", but took a long time due to my flow issues.

20200319_165934.jpg
 
Any prep is all about getting paint to stick, I know some plastics don’t like to let anything adhere.
With the model car, if it’s a kit you put together you can use the parts frame to test adhesion.
When starting out trial and error is all a part of the learning curve, embrace it don’t fight it. I promise it gets less frustrating and there are times we all feel like throwing airbrushes in the bin lol
 
Wow, what a difference!
I purchased an Iwata Revolution CR .03mm and all i can say is WOW, the amount of control compared to the PointZero, I was able to use all of my paints.
Now I'm no artist, just a model painter, but I think it came out all right.
These are parts to an Airwolf body I 3D printed for my RC helicopter.
I used the acrylics, enamels and washes to make the exhaust and guns looked heated.
 

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