How can i simulate dust in scale using mig pigments like the effects shown in the following topics: https://armorama.kitmaker.net/forums/107148 and http://armorama.kitmaker.net/forums/154695
Suppose that the model is painted and varnished with
acrylic varnish and has a matt surface. Which is the best way to go?:
(1) Apply first mig pigment fixer. Then before the fixer dries, gently brush the pigments on the surfaces? If this is correct do i have to apply again fixer in the end or any varnish to protect the pigments from hand touching?
(2) Apply first the pigments and then pigment fixer? Is there any danger that the pigments disappear?
(3) Apply pigments and then touch above the pigments a moisted with Mig thinner for washes brush so that the liquid expands? If that is correct do i have to use a varnish or pigment fixer in the end to protect and 'close'the pigments?
Thank you in advance. I would be very pleased if you could provide some useful answers. Looking forward to your replies.

I used the True Earth http://www.true-earth.com/contents/en-uk/p175_Dusty_Road_-_Strada_Polverosa.html product on my Leopard, this was done with an airbrush.





This stuff works great, and is easy.

There are many ways to apply pigments, so long as they are applies on a matte finish. One way is to pick up some pigments (dry) with a brush and brush it on directly to the model. Another way is load a brush with pigment and deposit the pigments on the surface. Don't work the pigments into the paint, just let them sit in the top. Then, use another brush loaded with mineral/ white spirits and wet the surface the pigments are on. This is a very important step, and I don't know why. Once the surface and pigments are wet, take your wet brush and smear the pigments around where you want them. This will dilute the pigments into a wash like liquid. Let this dry, and then you can remove excess with a stuff brush or a cotton swab, or even a brush damp with thinner. Hope this helps

The method you describe seems same like the third i describe. Thank you for your reply. What about MIG pigment fixer: should be used before or after placing the pigments Is there anybody who used this product to achieve the dust effect shown in the first links?

Not sure if there is a 'right' way to use the MIG pigment fixer, but I've had great success by using a brush to paint the areas where I want the pigment to go, then use a brush or use your fingers to apply the pigment over the wet area. It works great! The wetter you make the area, the more pigment you can apply and have it stick. If you make it REALLY wet, you can apply multiple colors of pigment and mix them into a slurry, and get some 3D effects, like mud buildup. Hope this helps.

For dust, I don't use pigment fixer because I like having the option of blending and removing the pigments once they are dry. If you were to use pigment fixer instead of mineral spirits, then you won't be able to change their appearance after the fixer is dry. I use pigment fixer for muddy areas instead.

Thank you all for your replies!