Quote Originally Posted by OC Richard View Post
So the first and last are both halved? Is that what "half pivot" means?

If so, I visualize an imaginary line going through the middle of the first and last stripe of the woven tartan, and think of the pattern flipping at those places.

Does the DC Stewart method move the imaginary line to the outside edge of the first and last stripe, so that those stripes are eliminated when the pattern flips?

If so I can see how it might cause weavers (and computers) to incorrectly double or halve the outer stripes.
Richard, yes it does. This paper gives a visual explanation. https://www.scottishtartans.co.uk/Sett_Sticks.pdf