#declare Metal =
finish {
    metallic
    ambient 0.2
    diffuse 0.7
    brilliance 6
    reflection 0.25
    phong 0.75
    phong_size 80
}

#declare Copper_Texture = texture { pigment{ rgb <0.72, 0.45, 0.20>} finish{ Metal }}

#declare Copper_Metal = texture { Copper_Texture }