Quote Originally Posted by duhvinci View Post
I would agree with you except for the fact the base dimensions and top dimensions contain different aspect ratios, resulting in differing slope of the front and side panels. My only reason for creating the special UCS (and slicing object) was to facilitate the point picking.
I created UCSs at first but the slicing kept working at 90 degrees to the plane I wanted. ~shrug~ I don't know why.
Then I realised that the aspect ratio is not relevant so long as each corner is treated separately.