When I cut strips then want to cut squares or diamonds from the strips I don't want to move the fabric at all so I move the ruler guide to the opposite channel. It's much easier to walk to the end or the other side of the table and cut the shapes. I could set it longways at the end of a table and only use one end but that's too awkward for me. The demo person said it's better to have access at least on one side and the end. She moved to the end when she started cutting diamonds.