sand cast finish

In the painting process, use really thin paint, crank up the air pressure so it is dry before contact. This will leave a sandy residue appearance to the surface.

You can also use Mr Surfacer, stippled on with a brush.

I've used on armour before now to create that cast look.

Karl

This seems like a good tip. I assume it would work for engine transmissions with texture, as well?

Thanks everyone for the input. I used the liquid cement and a trimmed down acid brush and got just the look I was after.

I use much the same technique a ABARNE, except that I take an old paint brush and cut the bristles off until the remaining bristles are about 1/8" long - leaves you with a stiff bristled brush which is much finer than a toothbrush.

You can use Testor's liquid cement (the brush on kind that comes in a bottle), and brush it on your plastic.  Then after the surface has softened a bit, use a stiff brush (I use an old tooth brush) to stiple the surface.  Depending on how much cement you use and your stipling technique, you can simulate castings of almost any roughness.  The technique works great on 1/35 scale armor and would probably scale up fine to 1/12.

DOn't know if it still available but there was a thinner for Floquil paints called Diosol.  When sprayed on bare palstic it gave that look.

Perhaps in your painting. using a VERY MATTE enamel paint (not metalizer type) such as Humbrol, airbrushed, for the spokes. Perhaps with a rough primer undercoat. Not sure what to reccomend for the rim.