How to make continuos Bias Binding
Cut a square of material and mark the diagonal and cut across the diagonal
Place the pieces side by side and sew a narrow seam. Press.
Turn the material so that the seam is diagonal, draw width of bias on the bottom edge
Roll the material to make a square with the edges now diagonal
Pin together, so that the drawn line is the edge of the other side. Sew and press open.
Cut along this line and by drawing and cutting you will get a continuous length of bias binding