Just a niggling question. I'm planning to paint stuff using acrylics, and I'll be thinning them with distilled water.
I'd like to know if I have to spray a coat of primer on my aircraft before I use the acrylics(like automotive grey primer or something) on the plane. Or will the paint stick if I just airbrush it directly?
Also, can I use a coat of matt white or grey enamel paint as a primer for my acrylics? BTW, I'm talking about normal enamel paints here, which you use for normal everyday household painting(not modelling enamel paints. I can't get them here in India

Opinions welcome...
Rgds,
BP.