Tim F. Midlothian, TX
Why do you zig zag after the bag is sewn together on this project but on the shoe bag you zig zag before sewing the bag together? Does it make a difference when you do the zig zag?
January 18, 2014 22:06
Cindy O. ,
The reason for zigzagging the edges of the shoe bag before you sew the seams is because of this method of making an opening in the drawstring casing which requires that you press the seam open. When you need to zigzag both edges of the seam allowance, it is easier, especially for a beginner, to zigzag the edges before they are sewn.

On the rest of the projects in this course, we demonstrate zigzagging the edges together after the seam is sewn, but there's nothing to tell you that you can't zigzag all of the cut edges of your project before sewing it together, except that it saves half the thread and half the time.

One consideration is that a seam is stronger when pressed to one side than it is when pressed open, so we preferred when possible to zigzag the edges together and press the seam to one side. Also, sometimes zigzagging on a single layer on lightweight fabric can cause the edge to draw in and slightly alter the size of your cut piece. This would not matter if you were sewing a bag but it may be something to think about if you were sewing a garment or something with small pieces.

Like many other sewing techniques, you will find that there is more than one way to do the same thing. We have shown you the methods that we have found that we like the best, and with practice you will discover which methods you like best and why.
January 20, 2014 21:25