I have been asked for ideas on how to bind a quilt with non standard corners like an octagon or hexagon. The method is similar to the normal way of binding quilt corners, but just looks slightly different because the angle is different.
Make the binding strip in the normal way. I use 2.1/2″ strips of fabric pressed in half along the middle so that they become double thickness strips of fabric 1.1/4″ wide. For my octagon quilt I have used four strips of fabric cut across the width.
Lay the binding with the fold towards the middle of the quilt, raw edges in line with the quilt edge and start sewing the binding to the quilt about half way along one edge. Leave about an inch of the binding free so that you can join it to the other end of the binding.
Binding the quilt corner
Before you begin sewing the binding, find the half way angle of the corner. This will not be along the seam because you have a square corner on one side of the seam and a triangle corner on the other side. You can either use a protractor to measure the angle or just judge it by eye. Mark a small line along the halfway point and then place a pin along that line with the point of the pin towards the corner.
Sew the binding to the quilt along the edge. Go very slowly as you approach the corner and stop sewing when you reach the pin. You’ll be able to feel it under the binding. Backstitch a few stitches and take the quilt out of the machine.
Fold the free end of the binding away from the quilt corner so that the next quilt edge and the binding form a straight line. The binding will be in the shape of a V.
Place your finger on the binding at the corner and fold the binding back down along the second edge of the quilt. Make sure that the edge of the fold in the binding is at the corner of the quilt and that the free section of the binding follows the line of the quilt edge. Pin in place and continue sewing the binding to the quilt.
Repeat at each corner until you get back to the edge of the quilt where you began the binding. Stop sewing an inch or two away from the beginning of the binding. You now have two trailing ends of binding on a straight quilt edge so can finish the binding in the normal way. On the right you can see the mitred corner on the back of the quilt.
Here’s the video: