The Whirly-Twirly quilt block is not only simple to construct but also an easy block to alter for a variety of designs. First, I’ll show you how to make the basic block.
For one block, cut two dark and two light fabrics ½” wider than their height. I cut my rectangles 5” wide and 4 ½” tall, for a finished square of 4”.
Now stack your four units on top of each other, right sides up. Take the top unit and fold it in half by its width. Open it up and fold it in half again by its height. You now have the center of your block marked. Place it back on top of your units.
On a cutting mat, lower the right side of your unit pile one (1) inch as shown. Place your ruler so that it falls on the center point but remains perfectly vertical on the mat. Cut the units in half.
Now you have several choices as to how you arrange them. First, the lights or darks can be positioned in the center. Second, you can have the twirl’s outer edges wider or narrower.
Once you have arranged the units as you like them, fold the light pieces over onto the dark pieces so that the edges extend a quarter-inch on each side. Sew them together with a quarter-inch seam allowance. Press open.
Position the pressed squares back into the block design on your cutting table. Fold each of the top square units over onto the bottom units, right sides together, and sew.
You now have two long units. Press the center seam allowances in opposite directions as shown. Match the center and pin. The opposite seam allowances should butt up against each other, making it easy to align them.
On the back side of the sewn unit, finger press the seam allowance in opposite directions on the right and left side as shown. This will form a little square in the center, distributing the bulk evenly.
Your block is now complete. Well, that is if you want to stop here. The Whirly-Twirly quilt block looks great when you twist it. If you would like to add the twist effect, you will find my directions in the Right Inclination tutorial.
Have fun with this one!