excellent i discovered the intersect after my post, its going good so far but time consuming. i'll post resukts sometime tomorrow!

BTW, what did you think of my suggestions? the lock to plane one might satisfy some peoples requests for custom planes until v2 is released, and i think the color coded axis might help clarify the interface ;)

here's my progress so far, any tips for when i get to the corner part. not looking forward to that.