Thank you very much Michael.

I was using the spur gear script for a "pattern"

What you are saying makes perfect sense.

hmm... I'm thinking that BasePt is at cplane 0,0,0, so base_x = base_y = 0 (?)

Report: Made the recommended changes, and they work correctly.
Uploaded corrected script.

Still need to work on other point picking permutations.

-Brian