Zip, about 3cm shorter than the length of one side (excluding seam allowance).

Also cut one from interfacing, without a seam allowance.

Each piece of the pattern in a marker has a seam allowance added to the basic outline.

He was used to working with only a tiny seam allowance.

If edges of material are ragged, you might want to hem them using a very small seam allowance.

"They're looking much more closely at seam allowances and how buttons are put on."

Trim the under seam allowance to 3mm ( in).

Cut outer fabric and lining out with a 1.5cm ( in) seam allowance.

Press seam allowance to the wrong side on the lining and notch out in the same way.

Another computer command adds the seam allowance and, after the desired modifications have been made, a piece of the new design is created.