ahhh I see what you're saying. That seems quite feasible..... hmmm big changes will be needed to my script but I can give it a try. Only problem now is when it flicks between the different res models. The only way I can think of doing it is to blend between the opacities of the materials of each model. Only problem is: 300 spiders * 3 models = 900 materials! lol hmmm could be interesting.....

Alan