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Block of the Week Block 8 Pinwheels

Block of the Week Block 8 Pinwheels

It's all about the Half Square Triangles this week. We are making Pinwheels! Just like last week, our Half Square Triangles will be slightly oversized and we will trim them down to the accurate size.

You will need 2 Colors and a Background Fabric.

Fabric A - Color 1

Fabric B - Color 2

Fabric C - Background


Fabric A - Cut 4 - 4" squares

Fabric B - Cut 4 - 4" squares

Fabric C - Cut 8 - 4" squares


Draw a diagonal line on the wrong side of the 8 Fabric C 4" squares. 

Place the 8 Fabric C squares, right sides together with the Fabric A and Fabric B squares. Chain piece these, sewing 1/4" on either side of the drawn line.

Cut apart on drawn line.

Press toward Fabric A and Fabric B. You will have 8 slightly oversized Half Square Triangles of each fabric.

Trim all of these Half Square Triangles down to 3 1/2" using a trim tool such as a Bloc Loc Ruler (this is my go to Half Square Triangle trim tool) or if using one of your quilting square rulers, line up the 45 degree line on your ruler on your diagonal seam to get the most accurate trim.

Stack each set of Half Square Triangles as shown below and chain piece them together. Press toward the darker fabric.

You will have 4 segments of each fabric.

Create the Pinwheels by sewing the above segments together as shown below.

You could press this seam open, however, I wanted to show you another way to press any "Four Patch" block to keep your fabric bulk down where all the seams come together in the center.

Take a seam ripper (or scissors) and take out the 1 or 2 stitches inside the seam as shown.

Open up the block and slowly pull the seam in opposite directions as shown.

Press the seams and your block will lay flat (and you will have a tiny pinwheel in your seam on the back).

You will have a total of 4 Pinwheels (2 Pinwheel blocks of each fabric).

Layout your Pinwheel blocks.

Sew the top Pinwheels together and the bottom Pinwheels together. Press these seams open.

Sew the 2 rows together to complete the Pinwheel block. I also pressed this last seam open.

Can you believe it, week 8 is complete. Great job, you have a Pinwheel block.

Don't forget to post a picture of your block on the Ruth's Stitchery Facebook page to be entered into February's drawing.





Posted by Beth Spillane

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