Pony - U are a star!! :bow: I was working on a NURBS model last night - pushing and pulling control vertices and hulls - after about an hour of this, my laptop started seriously grinding disk... I had to save the model, close Maya, and reset, once reloaded the model did no better. I just read your post and loaded the model again, deleted history, and now it's flying along! If ever I meet you, I'll buy you a pint! Of course, I'm hoping most of these worries will go away when my new PC arrives after Chrimbo