The tip looks normal to me the wave needs to start somewhere, if you use cos, and start from zero, it should look ok. (You need to rotate turn for sin to start smooth) I recommend using 6.28319 for value 1 in all the trig nodes (sin, cos, tan) this way it will cycle at 1. And I adjust the wave count, on the node before (an add or subtract) (you can also animate the wave from value 2 of this node by attaching the frame number) (node 11). Just to clarify nodes 6 and 7 are the center. Node 5 is the Radius, and node 2 is the Radius squared (I use one or both of these for my dampers). And I am not sure, but I think a multiply might be faster than a POW with value 2 = 2. (When you animate three of these together, and then ray trace through them, all the clock cycles count) Hope this helps, Gary