in news:5c4c20b9@news.povray.org Thomas de Groot wrote:

> Proof of concept using different finishes for surface and scratches. 
> Still in flux...
> 

The scratches are based on the random sticks? If so, try uses extremely 
stretched boxes as sticks to get a sharper 'impression'.

Maybe use a gradient 'depth map' texture on the sticks, the scratichg edge 
rgb 1 and going to rgb 0 to the other edges. Vary the rgb 1 on the sharp 
edge for depth variation. 
 
Render it with orthocam and a light at the camera location.

ingo

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