Altering blind hem stitch width
Press the "+" key in the lower row to increase the stitch
Press the "–" key in the lower row to decrease the stitch
You can move the left needle drop position with the "+"
or "–" key in the upper row.
Select "Shell Tuck".
The following 3 options are available.
Narrow shell tuck stitch
Medium width shell tuck stitch
Regular shell tuck stitch
Use a light weight fabric (Tricot, for example).
Fold the fabric in bias as shown and stitch on the fold.
Allow the needle to barely clear the folded edge to create
a shelled edge.
If you sew shell tucks, space the rows at least 1.5 cm