I have been making a lot of bias tape lately because I am using it to finish my seams. When I need a large amount of bias tape, I always use this method. For a lack of a better term, I call this the “continuous loop method” of making bias tape.

By stitching only two seams, you are able to make a really long bias tape.

Let’s get started.

Cut a square piece of fabric.

Draw a line from the bottom left corner to the top right corner. Cut along the line. Now you have two triangles.

With right sides together, put the triangles together matching the top edge.

However, there’s a nuance here. Do you see that there are little triangles hanging out? That is because I am offsetting for the seam allowance. I am using 1/4″ (6 mm) here.

Stitch the seam.

Press the seam open and you have this.

Whip out your pen again. Draw lines parallel to the *longer” edge. If you need a 1″ (2.5 cm) wide bias tape, you will draw the lines 1″ (2.5 cm) apart. If you need a 1 7/8″ (4.8 cm) bias tape, you will draw the lines 1 7/8″ (4.8 cm) apart. My sample here will be 1″ (2.5 cm) wide.

The likelihood is that the last section will not have the width you need, so trim it off and discard.

With right sides together, line up the short edges like this, so the lines you drew are connected/straight.

But this is not what we want actually. We need to “pull” the corners so that the one line is connected to the neighboring line instead.

By doing so, you see that there are overhangs on each side.

With right sides together again, you can pin the edges together. Similarly, to prepare for the 1/4″ (6 mm) seam allowance, the lines need to offset a little bit. You can faintly see through this fabric; do you see that the lines are crisscrossed?

A closer look.

Stitch the seam and press, and this is what you have.

You can now cut from one end, following the line (which is now continuous).

And you will end up with one long bias tape!

There are some pros and cons to this method.

Pros:

• With relatively little fabric, you can produce a long bias tape.
• It only needs two seams to make a long bias tape.

Con (I can only think of one):

• After you cut, you will realize that there are a lot of seams within a pretty short length. This is the price you pay I suppose.

I usually don’t bother to calculate how much bias tape I need – if I didn’t make enough, I can make more.  But if I start with a 10″ x 10″ (25 cm x 25 cm) square, I’d end up with about 95″ of 1-inch wide (240 cm of 2.5-cm wide) bias tape. (Basically, it’s 10 x 10 / 1, and then assume about 5% waste and seam allowance.)

Hope this helps! Keep stitching!