What ratio is best for Testors Primer & paint thinner for airbrushing?

mrclean08 wrote:

I'm lucky I practiced on scrap plastic and not my real model.

That's always the wisest way to do it!

I used Testors Airbrush Thinner (1789).  I think you are right though. I should be using a higher ratio.

 I 'm kicking myself now because I looked on the back of the bottle's directions and although it does say "For enamel paint only"; however, it instructs that for flat colors, the suggested ratio is 3 parts paint to 1 part thinner.  

 For me to use 1:1, I have way too much thinner in my mix and no wonder why it's not drying.  I'm lucky I practiced on scrap plastic and not my real model.  

 

I concur with Mike. You didn't use enamel primer and acylic thinner or vice-versa? - You would know straight away if you used the incorrect thinner as the two would refuse to mix and would separate in sticky lumps.

Depending on how thin the primer is I would start at 2:1 (2 parts paint to 1 part thinner) as that is my normal ratio for most colors.

Is that thinner compatible with that primer? It sounds odd to still be tacky even after 48 hours.