Bias tape is often used as an edge finish.
Here’s a general photo tutorial about bias tape, from Dana at MADE. Early sections of that post show the different types of bias and what they can be used for.

There are 2 ways of folding bias. Single fold (actually 2 folds) and double fold (3 folds).
A 2″ wide bias strip folds to :
1″ single fold tape
1/2″ double fold tape.
In cross-section the folds are like this :

”single-double-bias”

To add to the confusion about names, it is now difficult to buy pre-folded ‘double fold’ tape, and many suppliers call the tape with 2 folds double fold tape.

Want to make bias tape from your own choice of fabric ?
But don’t want to waste fabric in large unused triangles. Or sew dozens of little seams. Followed by all that fiddly folding.
Happily modern methods avoid all those problems.

The first sections of this post are about cutting and folding the bias tape.
The final section is about special presser feet for sewing on the binding.

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Cutting and sewing

Here’s a video from Deborah Moebes of Whipstitch about making a continuous length of bias tape using the whole area of the fabric.

Trim the fabric edges so corners are square before starting this process.
It is much easier to do the marking if you have a long graduated ruler, like a quilting ruler.
I start marking the strips from the edge away from the seam. That way, the unwanted bit you trim off has some of the seam in it.

Cut strips twice the width of the pressed ‘single fold’ tape you want.
For example, if you want 1/2 inch single fold tape, cut 1 inch wide strips. This is the usual size in clothes patterns, as it’s the size of the most common ready-folded tape.

This tutorial from Pirate Rogers has a table showing how much fabric you need to make given lengths of tape.

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Single fold tape using a bias maker

It isn’t always necessary to use pre-folded bias tape, so check the pattern instructions before doing this step.

”single

Here’s a video on using a bias maker, from Deborah Moebes at Whipstitch. She’s using 1-1/2″ fabric strips with a 3/4″ bias maker.

Some tutorials tell you to pull the bias strip through the maker, but it’s much easier to pull the maker along the strip.

”clover
image source

The size of Clover bias makers is colour coded :
. . . . folded strip, made from cut strip (inches)
green .1/4 . . . . . . . . . . . . . . 1/2
yellow 1/2. . . . . . . . . . . . . . . 1
red . . 3/4 . . . . . . . . . . . . . . . 1-1/2
blue . .1. . . . . . . . . . . . . . . . . 2
black . 2. . . . . . . . . . . . . . . . . 4

(You can also get tape makers which add fusible tape to the bias while it’s pressed. Used more in quilting than in clothes making.)

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Do your own folding

If you don’t enjoy using a bias maker, here’s a tutorial from Did You Make That on doing your own folding (from about 1/3 through).

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Two tools combined

Fold and press single fold tape

”simplicity-tape”

There’s an amazingly expensive gizmo from Simplicity which combines folding tool and iron.
Click on a tab on that page for a video about using one.
And here’s a detailed photo review by Dana at MADE.

How many hours of your life do you spend making bias tape ? how much would this device cost you per hour of time saved ? though of course you may find it fun to use, which is priceless 😀

Fold and sew double fold binding

”binder-foot”

A sewing machine binding foot folds the bias strip as you sew.
Several styles of foot, but they all work the same way – a shaper which folds the bias strip, and a middle slot which takes the fabric edge you want to bind.

These feet may claim to do the folding for you, but most of them do the second (centre) fold and hold the tape in place, but work better with the first (edge) folds already done. (Bernina use 2 parts, a presser foot and a folder-guide which attaches to the needle plate. There are separate folder-guides for pre-folded and unfolded tape.)

Here’s a video from Sewing Cake about using the basic foot using pre-folded bias.

Here’s a photo tutorial from SeeKateSew about a more sophisticated foot which you can adjust to sew different widths of bias tape.
Here’s a video on using this adjustable foot.
This is a generic foot but it doesn’t fit all machines, so check it works on yours.

There’s a knack to holding both the tape and the fabric being bound in place. So practice before doing this for real. Some people never get to be happy with the result.
And make test samples to get the needle in the best place for sewing your specific fabrics.

Some skill and practice needed to use these attachments when sewing round curves and corners. There is a tutorial on sewing corners using pre-folded bias tape, from about 3 minutes in this video from Bernina.

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Many useful tricks and tools to help us make and sew our own bias tape.
Well worth exploring if this is a look you like.

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