Originally Posted by
Iceblossom
More clarifications too late to edit.
For the setting triangles, I would cut blocks that were 13.5" and slice along the diagonal. That will leave the outer edge as bias but you will soon be stabilizing it with the border sashing. You can also cut the setting triangles so the long edge is straight of grain, but I'd do it my way
Question about the setting triangles and bias edges. Would this work?
Draw a diagonal line across the square (for the setting triangle). Stitch 1/4 inch on each side and then cut on the drawn line. This would stay stitch that bias edge.
Those are pretty patterns.