Christian Froeschlin wrote:
> I didn't try your point array macros, but from the other sample
> image (not the one you linked to), I think it might be able to
> generate the object which needs to be differenced away from
> the prism to get round edges at top and bottom.
> 
> Basically, the idea would be to use the same spline defining
  the prism base for sweeping a 2d corner cutting shape.

That's a good idea, I haven't tried it in a while, and never tried it in 
quite this way.  May have to look into this again...

-- 
-The Mildly Infamous Blue Herring

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