Kleine Spinnerei...

include "textures.inc"
include "colors.inc"
include "glass.inc"
include "skies.inc"

camera {
  location <0,3,-6>
  look_at <0,2,0>
}

light_source { <-5, 5, -6> color White}

declare bogen = torus {
  .5, 0.2
  rotate z*90    
  pigment { Col_Glass_Ruby } 
  translate <0,1,0>
}

plane {
  y, 0
  pigment { checker color White, color Black }
}               
                
sky_sphere {
  S_Cloud1
}
difference {
  union {
    box {
      <1,0,-1>
      <2,2,1>
    }
    box {
      <-1,0,-1>
      <-2,2,1>
    }
  }
  lathe {
    bezier_spline
    4,
    <0,0>, <1,1>, <1,3>, <0,4>
    rotate z*90
    translate  <2,2,0>   
  }
  texture { Tinny_Brass }
}

lathe {
  bezier_spline
  4,
  <0,0>, <0.2,1>, <0.15,3>, <0,4>
  rotate z*90
  translate  <2,1,0> 
  texture { Polished_Chrome }
}

object { bogen
  translate <-0.6,0,0>
}                
object { bogen
  translate <-0.2,0,0>
}              
object { bogen
  translate <0.2,0,0>
}
object { bogen
  translate <0.6,0,0>
}