A first coat or Primer over the model… “Can I use the Primer directly on airbrush?? can I mix it with other paints, after this, thin down it and keep working?? What is the ratio of Thinner and Primer, if i want to use the Thinner?? And what air pressure on compressor?? It works over all surfaces?? Plastic, metal, brass…?? I’d cleaned the model with acid and soap, with acetone too, why now the Primer peels off from the model?? Why I can scrap it with my fingernail?? It don’t works?? How many time it needs for a complete dry process? Can I paint over the Vallejo Primer with enamels, or non acrylic paints?? Can I use whases and filters with tumpertine over an acrylic base coat?? Why a range of coloured Primers?? It can do the paint process more easy?? It clogs my AB in seconds…why?? Really I need true steel balls for shake it??” …Let’s see some answers soon..