Originally Posted by
Lori S
Starch... I have actually stretched the edges just by trying to stay stitch. If you do choose to stay stitch.. use your walking foot.
Ditto, I too have stretched the edges by stay stitching. I've had more success with starching the snot out of the fabric BEFORE I cut it into triangles. If you starch and press AFTER, you run the risk of stretching the bias as you're pressing.
As others have said, you might also try cutting your triangles so the long edge is on the grain instead of the bias.