To give a rectangular pillowcase around the seam lace, pillowcase length is 60 cm, width is 50 cm, how many centimeters to lace?
Straight seam does not fold, want a perimeter, plus the length of the corner, you can, about 250 centimeters.
If used to back pleated to the perimeter adding angle of 3 times the length of about 690 cm. If you do not fully discount at 250-690 cm between the flexible pleat can be grasped.
