How to treat seam allowance using "single type" bias
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How to treat seam allowance using "single type" bias

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Explains the sewing process of using bias tape (single type) for seam allowances at the collar and armholes, etc.

First, sew the "front bodice" and the shoulder and side lines of the back body together.

The seam allowance of the armhole will be treated with bias tape.

Fasten the bias tape (single type) to the armhole with marking pins.

Start at the center of the side seam and fasten all the way around.

Leave 1 cm at the beginning and end of the bias for the seam allowance for sewing together.

Sew the bias tape right side together with a seam allowance of 1 cm.

Reverse stitch is not required at the beginning and end of sewing

Sew with a small seam setting.

After sewing, press seam allowances open on the bias tape with an iron and cut 5mm off the seam allowance

Sew the bias tape and armholes with a 1 cm seam allowance using a sewing machine

I sewed with white thread for clarity. Please do a backstitch on this one.

Cut off the excess seam allowance when you are finished sewing!

Cut the seam allowance of the bias at 5mm, and cut the seam allowance of the armhole on the body side at 6mm

If you make the cut on the body side a little longer, it will be harder to see the seam allowance step from the front side when it is folded over.

After cutting the excess seam allowances, the next step is to press seam allowances open with an iron.

Next, fold down the bias tape to the back side of the body with an iron.

Iron so that the bias tape is not visible from the front

Sew the bias on the back side from the front side

In this case, we used a 1 cm single bias. The finished armhole line is aligned with the edge of the presser and sewn.

I was able to sew it together. The bias tape on the back side is also sewn in place.

This completes the seam allowance treatment using bias tape (single type).

This method can be used not only for armholes, but also for seam allowance treatment of collars and hems!

It is much easier than Facing, so please learn it!