what is the best way to thin the paint that comes whit the rusty rail painter, as i want to use it in a air brush
Hi William, welcome to the forum. [#welcome]
Do you know what type of paint it is? Acrylic or enamel? How you thin it will depend on that.
I have all the colours that come with the painter. They require a whole lot of shaking to get the chunks to liquefy if they have been sitting a while. I don’t think it would be very airbrush friendly paint and would certainly run it through a strainer first. As far as thinning goes I just don’t know.
If you are successful let me know how it goes and what you did. The colours themselves a great.