Dorothy - here's a tutorial that shows how to lengthen scallop nestabilities.
http://mycasestudies.blogspot.com/20...es-shapes.html You can use the method to scallop the long end of a card (5 1/2 in.), but the paper or cardstock will not be 4 1/4 in. the other way. But you would still have the scalloped edge. You could add patterned paper or cardstock to cover the rest of the card. This can be done with the regular rectangle sets. You might be able to put something under the other side of the long edge to prevent it from cutting through (like the tan mat), but it would take a little experimenting. I think I've seen a tutorial on it, but can't recall where.