Wash Problem: What Went Wrong?

[MintFish]

So I've run into a strange problem and I'm trying to figure out exactly what went wrong. I just finished basecoating a Kobold Ogre for Super Dungeon Explore and began applying a wash to all the flesh parts. Once I'd applied the wash, I was quite puzzled to find that the deepest recesses of the model had the exact opposite effect I'd hoped for; namely, the wash made these parts significantly lighter to the point that they're closer to a bone white color. A crude photo is below; note the bright green just above the elbow joint. There are points like this all over the model.


View attachment 23277

Since it's a fairly large model, I'll probably just go over those parts with the base color and just not bother washing the fleshy areas but I'd like to know why this happened so as to avoid this kind of issue in the future.

The flesh was done with GW Warboss Green thinned with Liquitex Airbrush Medium and applied to the model in about 2-3 thin layers with my airbrush. The wash in question was GW Biel-tan Green. The model was primed black via airbrush with Vallejo Surface Primer.

 

[Zab]

Shake your washes well and try not to thin with too much water. Citadel washes have a tendency to have the talc separate when drying if thinned too much. I mix mine with water and the base colour of paint I am using. Or just make my own with the vast range of colours I have.

 

[RuneBrush]

Yup, same as Zab, the wash needed more mixing before use The newer GW colours do something weird if you use a lot of them and they're not thoroughly mixed. You can solve this by re-washing however (be selective). I had this for the first time the other day, when I was using a wash almost neat but pooling loads of it in.

Mixing your own washes is a good alternative too. I can recommend a 1:3 mix of Medium and Water for the 'wash dilutant'. Personally I prefer the depth you get from a custom wash too, as it does more than just "tint" the colour it's applied to.

 

[AndyG]

Yep exactly the same happend with me get this chalky white residue in the creases. Annoyed me so much I no longer use the new GW washes and bought army painter instead.

 

[MintFish]

Disappointed to hear this about the GW washes; I've been using them for about a year now without incident. Does anyone know if age or changes in temperature contribute to this problem? It has gotten a lot colder here in recent weeks so I'm wondering if that might account for the sudden shift in quality.

 

[Ushtarador]

I usually get this problem when I don't mix them well enough, or if I use too much water to dilute them. If I keep that in mind, I neve have problems.