Hi all,

I'm modelling an engraved ring (the One Ring, actually), and I'm suffering a 
serious slow down when I add the text. Currently, the basic structure of 
the model is something like this:

  union {
    INNER_RING (inside of the letters, sort of a torus)
    difference {
      OUTER_RING (a slightly bigger torus)
      TEXT (a union of individually rotated and translated letters)
    }
  }

The whole thing is bounded_by a short cylinder of the right size. Is there 
anything I could do to improve the rendering speed? Without text it renders 
in around 2 minutes, with text it takes more than 2 hours.

-- 
light_source{9+9*x,1}camera{orthographic look_at(1-y)/4angle 30location
9/4-z*4}light_source{-9*z,1}union{box{.9-z.1+x clipped_by{plane{2+y-4*x
0}}}box{z-y-.1.1+z}box{-.1.1+x}box{.1z-.1}pigment{rgb<.8.2,1>}}//Jellby

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