The edges aren't fully working for me too (on seamonkey), they look somewhat corrupt or out of order or something.
I do like the animation, is the behavior of 'oilrig' scripted or is it a generic solver?
edit, a pic of what I mean concerning the lines:
  lines.png (Size: 126.23 KB / Downloads: 27)
	
	
	
	
	
I do like the animation, is the behavior of 'oilrig' scripted or is it a generic solver?
edit, a pic of what I mean concerning the lines:
  lines.png (Size: 126.23 KB / Downloads: 27)
	
      
      
 