Binding is a strip of fabric that is sewn around the edges of a quilt to finish it off and prevent the edges from fraying. It can be made from the same fabric as the quilt top or a contrasting fabric. Binding can be applied by hand or by machine.
There are many different ways to put on binding, but the most common method is to use a bias strip. A bias strip is a strip of fabric that has been cut on the diagonal. This makes it more flexible and easier to work with. To apply binding using a bias strip, first sew the bias strip to the edge of the quilt top. Then, fold the bias strip over the edge of the quilt and sew it down. You can either hand-stitch the binding or machine-stitch it.