Airbrush Medium + Watercolor Paints = future paint layers on top of it crack?
I make mixed media work and have been learning how to use acrylic to suit my needs over the past 2 years.
I only started using various mediums about 6 months ago. Airbrush medium was one of the first ones I tried, though I apply it with a PAINT BRUSH. It allows me to be more fluid, but I think my first inclination to buying it/using it was because I read that mixing acrylic with airbrush medium is a more stable way to dilute it than with water. This would be useful for some wash layers.
I ended up mixing (Liquitex) airbrush medium with watercolor paint, which can actually look quite great. It has a more faint, ghostly effect when drawn on with a paintbrush. Or, you can basically drop in fluid into various shallow areas of a painting. Even thicker forms of fluid/airbrush medium+WC paint can look good and less "plastic" than when I mix acrylic paint with airbrush medium.
As I build up my painting, if I put any acrylic painting on top of these areas that have airbrush medium + watercolor - the acrylic paint, as it dries, starts to separate/crack. This of course looks terrible, and so I now have just stopped mixing watercolor+airbrush medium to avoid this problem.
DO ANY OF YOU KNOW WHY THIS HAPPENS?
I did buy Golden's version of airbrush medium to see if this still happens but I don't feel too convinced there will be too much difference so I haven't experimented with it yet.
It took me quite awhile to figure out that it was airbrush medium + watercolor causing the later acrylic layers to crack.
Isolation layers (like polycrylic) also seem to have a hard time adhering to these WC+ABM areas as well. The areas are so small, or drawn lines, it's not worth trying to spray clear coat or something on them either. It's a bummer to have to abandon this combination.
Last edited by mixedmess : 02-22-2019 at 11:00 PM.