P-R 3.1 blob received a bit of a fix since 3.02, perhaps that makes a 
difference. I wondered if you were using multiple blob statements or a single 
one with multiple components? If more than one blob is being strung together 
in a union or merge it could be same-surface problem.

Message <365CB150.7921D942@chop.swmed.edu>, Lothar Esser  typed...
>
>Dear Colleagues,
>
>  I am having trouble to get blob objects to work properly. I am using
>blobs
>to generate tube-like objects consisting of a great number of short
>cylinders.
>Povray 3.02 renders these blobs with lots of black dots on them. It
>usually helps
>to tweak blob_threshold a bit but so far these black dots never
>disappear entirely.
>I have tried may things which include using the keyword sturm, different
>texture maps
>at different positions i.e. individual and global but nothing seems to
>help.
>Does anyone have an idea why that might be (black dots) and possibly
>know what to do about it ?
>(The reason why I am using blobs is that I need to model transparent
>tubes with round
>ends. When I merge cylinders and spheres the whole thing gets terribly
>slow -
>so blobs are a lot faster but they don't seem to work.)
>Any ideas ?
>Thanks,
>
>   Lothar Esser
>
>------------------------------------------------------------------
>Dr. Lothar Esser
>Howard Hughes Medical Institute
>5323 Harry Hines Blvd.
>Dallas Texas 75235-9050
>E-mail : ess### [at] chopswmededu
>------------------------------------------------------------------
>
>

-- 
 omniVERSE: beyond the universe
  http://members.aol.com/inversez/POVring.html
=Bob

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