Hi good people of the POV community!

In my current project, of wich i yet say nothing further, I experience
weird "effects" or "artefacts" in my used sphere_sweep, when viewing it from
certain angles. I have no image, but maybe this is a known problem? Question
is, can these things be removed? I tried raising tolerance, but it's still
there. This is the code i use:

sphere_sweep {
  linear_spline

  16,
  < 0.24,  3.19, 0>, 0.027
  < 0.5,   3.20, 0>, 0.027
  < 0.75,  3.22, 0>, 0.027
  < 1.0,   3.24, 0>, 0.027
  < 1.25,  3.26, 0>, 0.027
  < 1.5,   3.30, 0>, 0.027
  < 1.75,  3.35, 0>, 0.027
  < 2.0,   3.45, 0>, 0.027
  < 2.25,  3.55, 0>, 0.027
  < 2.5,   3.65, 0>, 0.027
  < 2.75,  3.75, 0>, 0.027
  < 3.0,   3.82, 0>, 0.027
  < 3.25,  3.88, 0>, 0.027
  < 3.5,   3.92, 0>, 0.027
  < 3.75,  3.94, 0>, 0.027
  < 3.974, 3.95, 0>, 0.027
  tolerance 0.00001

texture {T_Brass_5E } texture {Rust scale 0.1   finish {ambient 0.001}   }
rotate <0,0,0> translate <0,0,0> }

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