Hi;

     I have a problem with a blob file I have been working on; I noticed
that this object (source below) has missing sections in two of the
components. This happens when I render the file in POV 3.1 Official and
3.1 Unofficial as well. Removing all components of the blob except the
offending members (marked in the source) does not help, however,
*rotating* or *moving* the offenders solves the problem -- but it ruins
the blob.

     Perhaps there is something simple I need to know about blobs?

Source:

/* Spider Debug File, Rick Adams/benboom@teleport.com */

#include "colors.inc"
#include "textures.inc"


/*original camera */
camera {
	location < -0, 2, -8 >
	angle 70
	look_at < 0, 0.0, 0.0 >
}

// Side view
//camera {
//	location < -10, 0, -0 >
//	angle 50
//	look_at < 0, 0.0, 0.0 >
//}

// Overhead view
//camera {
//	location < -0, 8, 0 >
//	angle 70
//	look_at < 0, 0.0, 0.0 >
//}

light_source {//overhead light
	< 0.0, 300, -100 >
	color rgb < 1.0, 1.0, 1.0 > 
	spotlight
 	point_at < 0.0, 0.0, 0.0 >
	radius 15
	falloff 30
	tightness 10
}

// Set a color of the background 
background { color red 1 green 1 blue 1 }



blob {
	threshold 0.6
	sphere {<0,0,0> 1, 1 scale <80,60,80> rotate <0,0,0> translate
<0,2,0>}//The body
	
	cylinder {<0,-1,0> <0,1,0> 1, 1 scale <5,40,5> rotate <-30,0,30>
translate <-55,70,-55>}//front left body strut
	cylinder {<0,-1,0> <0,1,0> 1, 1 scale <5,40,5> rotate <30,0,-30>
translate <-105,70,-115>}//front left middle strut
	cylinder {<0,-1,0> <0,1,0> 1, 1 scale <5,40,5> rotate <-30,0,30>
translate <-105,-20,-115>}//front left end strut

	cylinder {<0,-1,0> <0,1,0> 1, 1 scale <5,40,5> rotate <-30,0,-30>
translate <55,70,-55>}//PROBLEM front right body strut
	cylinder {<0,-1,0> <0,1,0> 1, 1 scale <5,40,5> rotate <30,0,30>
translate <105,70,-115>}//front right middle strut
	cylinder {<0,-1,0> <0,1,0> 1, 1 scale <5,40,5> rotate <-30,0,-30>
translate <105,-20,-115>}//PROBLEM front right end strut

	cylinder {<0,-1,0> <0,1,0> 1, 1 scale <5,40,5> rotate <30,0,0>
translate <0,70,66>}//back body strut
	cylinder {<0,-1,0> <0,1,0> 1, 1 scale <5,40,5> rotate <-30,0,0>
translate <0,75,124,>}//back middle strut
	cylinder {<0,-1,0> <0,1,0> 1, 1 scale <5,40,5> rotate <30,0,0>
translate <0,-20,124>}//back end strut
	
    texture {Bright_Bronze}
	scale <.02,.02,.02>
	translate <0,0,0>
	rotate <0,0,0>
  }

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