Mastercam X.
What I have done is open a new MC window.
Select everything = to left plane
draw a 1x1 box on the left plane
then switch back to top plane
then contour, single and select just the top line of the box
then go into WCS, select T and C for the front veiw
then I select contour, single then select the front line.
I do this for the bottom and the back.
When I go to post, there is a A0, then A-90, then A-180 but no 270 degree.
I am selecting Axis positioning, x axis as for an A Axis.
Any Ideas?