Hi James
Thank you for your time and for these helpful suggestions. :)

About "FatLines" node you are right. I didn't know this node already exists.
Fast mode works just like the Max's "FatLines" script.
Slow mode gives different results on closed curves.

I agree with you, but sometimes it's more convenient to write a node than to finding it. :)
And sometimes redoing is because of having different NE versions.
Like this one:
My "Extract" node is a completely different node. :)


Generating a plane with "rectangle" node is nice, but I couldn't find "rectangle2" node.
Also in my NE version, "SelCenterPlane" node works just for one point.
Here is a timing comparison.