Originally Posted by
quiltedsunshine
When I've done piano key borders, they never seem to turn out exactly the first time. I'll often re-sew the seams just a tiny bit (make the seam allowance bigger or smaller) as needed to make them work. I might only adjust 3 seam allowances in the whole border, or I may need to adjust 10.
That is exactly what I do also. Otherwise they NEVER fit.