Originally Posted by
Tartan
Do a facing binding. You place strips of the backing fabric face down on the hexagon edge. You pin and then follow the hexagon outline on your sewing machine, clip into the valleys and fold the backing fabric to the back. Carefully manipulate the edges out and press. Hand stitch the facing to the backing. If you put facing a quilt into YouTube, you should be able to watch how it’s done.
That was going to be my suggestion also. That you tube video should be very helpful and I wish I had seen it last spring.