[Long Cut]

Sure. See Ichneumon's post #96 on this very thread for some examples. I'm certain he can point to others.

[Starboard]

Just read #96. Interesting post, but somewhat confused by the following:

But as for what can be done with simple tools, anyone with a basic Geometry background knows that you can construct almost any pattern with great precision...Furthermore, the "geometric precision" of crop circles is often overstated."

Not trying to be hypercritical, just trying to get some insights.