In part one of this tutorial, I showed you two different methods for cutting out the Quarter Turn block. Now we’re ready to begin sewing the block together.
First, let me share a few helpful observations regarding the construction of this block. I mentioned previously that you would be working with bias edges. The bias edges are on the inside of the block and are the edges that you will be sewing to the center four-patch unit if you use the template method and mark the straight-of-grain on the side opposite the right angle (hypotenuse).
If you use the second method, cutting your pieces from rectangles, the outside edges will be on the bias. Treat them accordingly and remember that spray starch serves as a great ally with bias edges.
Second, you will need to position your triangles correctly as you sew them to the four-patch unit. In the diagram below, you can see that the 90 degree right angle corners are adjacent to the edges of the four-patch. The right angles make a quarter turn around the block, which accounts for the block’s name.
Complete sewing the four-patch unit.
It is helpful to set your block pieces in sewing order before you begin so that all goes smoothly.
Beginning with the #1 bottom triangle, flip the unit over onto the four-patch, right sides together. Sew a partial seam, stopping about halfway. Remove the sewn unit from your sewing machine and finger press open.
Place the sewn unit back into place with the remaining triangles and flip #2 triangle over onto the four-patch, right sides together.
Pin in place and sew the entire seam. Finger press open. (I recommend pinning in place since you are sewing a bias edge.)
Place the sewn unit back into place with the remaining triangles. Flip #3 triangle over onto the four-patch, right sides together, and pin in place.
Sew the entire seam. Finger press open.
Fold triangle #1 back onto itself. Flip the final triangle, #4, over onto the four-patch unit, right sides together.
Pin in place and sew the entire seam. Finger press open.
Now fold the #1 partial seam triangle back onto the four-patch unit. Complete the seam.
Press your completed block and square up if necessary. That’s it!
Isn’t this a beautiful quilt block? I’m in the process of making sixteen of these that should come together into a quilt top that look’s something like the graphic in part one. I chose to pepper the quilt with color via the four-patch units, keeping the surrounding triangles in pastels.