I've had pretty good success using silver metallic sewing thread:
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![[linked image]](http://i380.photobucket.com/albums/oo243/SGM_ret/FlexibleConduit.jpg)
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![[linked image]](http://i380.photobucket.com/albums/oo243/SGM_ret/StuG%20IV%20Late/RoofInteriorConduit.jpg)
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It comes in several different diameters and colors - silver, gold, and black. It's made of a metallic colored mylar-like material wound around a core of thread. It's very flexible, but will not hold a bend by itself like wire or lead solder.
However, once painted it looks very good - a little dry-brushing will bring out the texture.
You can find this stuff in the sewing notions sections of large crafts stores and places that sell fabrics, etc.
HTH,
Mike