Originally posted by canalman:
I bought an airbrush recently and I am about to try it. I'm not sure what ratio to use to dilute the paint. I am planning to use water base colors that you get at WalMart. Their small containers seem reasonable but I think they may be too thick to use directly from the container. Can anyone suggest a starting ratio for me?
I can't give you an exact ratio but here are some guidelines to point you in the right direction.
1. Check the label on the paint you plan to use. Some give guidlines for thinning for an airbrush.
2. A general guideline for acrylic paints is to thin them to the consistency of skim milk. I would try a few different mixtures (keeping track of the different amounts of paint and thinner) and do some tests on scrap material. Keep track accurately and see what gives you the best coverage and control.
3. Different brands of paint will take different ratios. If your airbrush is single or double action and the air pressure setting will also affect your results and mixing ratios.
4. Once you have the ratio and air pressure dialed in for a specific brand of paint record it for future use.
5. Some airbrushes have special nozzles or needles for acrylic paint. Check your airbursh instructions for additional information.