Originally Posted by
JustAbitCrazy
I WAS joining them on the bias. Not sure if it's the same technique you are referring to, but it's putting the ends together at right angles to each other and sewing diagonally from corner to corner, then cutting off the two unneeded triangles. If you aren't careful which way you put the ends together you get a twist in one end.
She has a way of creasing the ends before joining that make it impossible to end up with a twist.