Mitred Corners on Binding
After many dozens of bindings I have discovered the major problem with the corner is not being consistent in the seam allowance as you approach the corner. I also stop a couple stitches before i get to the 1/3" or 3/8" point and back stitch. This gives just a bit of space for the fold. The same principle as scant quarter inch in piecing. If you sew the binding on and when ready to do the final stitching and you fold the edge (corner) for the first fold of the mitre - if this section of binding that extends beyond the quilt is not parallel to the edge of the quilt, then there will be a problem and not give a good square mitre. That a lot of words to describe it but hopefully you will understand what I'm saying. Sometimes if the folded tip is far off being parallel, I will rip out the corner and restitch.