Continuous bias binding is a great method of making large amounts of bias binding in a continuous piece with less fabric required. It is also really handy if you don't have a lot of fabric to work with.
1. To start with cut out a square of fabric.
To give you an idea my square is 40x40cm. I cut 4cm wide bias strips and that gave me approx. 4mt of bias binding.
Using a fabric marker or chalk draw a line diagonally from one corner to the other, creating two triangles. Make a mark on the left and right sides of the square.
Cut the diagonal line, making two triangles.
2. Lay the triangles right sides together, at the edges you marked. Make sure the points of the triangles will hang out slightly at each end. Pin.
Sew a 5mm (1/4”) seam.
Press the seam open.
3. On the bias edge (the longest edge) begin marking the bias strips on the wrong side of fabric.
The binding on the Ella Top and Sparrow Top require a 4cm wide bias strip, so I have chosen to mark my bias strips at 4cm intervals.
A clear grading ruler makes this a lot easier and quicker.
When you get to the other side you may have a width left that isn’t wide enough for you to use. You can trim this off.
4. Fold the two ends right side together, making a tube. Make sure to off set your edges by one bias strip. See photo.
To check if your lines will match up poke a pin through the fabric at marked line 5mm in from the edge (your sewing line). Check the other side. The pin should come out on the marked line on the other side. If not adjust your seam slightly.
Pin. Stitch a 5mm (1/4”) seam.
Press seam open.
5. Starting at one end, cut along the bias strip lines that you have drawn. Keep cutting in a spiral direction until you get the other end.
Now you have your bias tape!!