Hi Scott,
Not wanting to pile a load more work on you, but ive had an idea for a new feature for the viewport side of things. When using a 4th axis in plot, when NCPlot reads A or B axis change, have the whole plot image rotate to the new angle, as it would on the machine so the cutting view is always the right way up. May look quite cool. We have a 4th axis and we machine top and bottom of a component. When im plotting after the first half in iso view i grab with the mouse and pull the image up the right way round so is easier to visualize. Let me know what you think of the idea, and any other users thoughts on this.
Cheers Keith.