The shop got a new toy and at first I was not too interested, then I played with it. It is now my favorite gadget. Scallop ruler doesnt do it justice. I call it homemade ric rac on steroids. It is way more versatile than I thought.
There are three sizes of rulers. Your finished width will be 1 inch, 1 1/2 inch and 2 inch. for this tutorial I used the 1 inch, it only gets bigger form here.
--Place lengths right sides together
--trace the outside scallop and all the points from the ruler onto the wrong side of you fabric. Move ruler down until your entire length is traced
--sew a 1/4 in seam from the traced scallop line. Stop and turn at the marked end points. For a smoother edge stitch 1 staright stitch at the turning point.
As a ric rac detail
You can but the rulers and pushers at the shop. We have them indiviually or as a set of three.