April 30, 2012

Modern Monday - Block 32

Double Pinwheel
Block 32 - Double Pinwheel
I was in the mood for a little precision piecing this week! You certainly could make yours wonky if you want. Just cut your pieces much larger and trim each unit skewed so it's not perfect.

Cutting:
  • From the orange, cut 2 - 3 7/8"* squares. Cut each in half on the diagonal to make 4 large triangles.
  • From the white AND gray, cut 1 EACH - 4 1/4"* square. Cut each in half on the diagonal twice to form 4 small triangles.
*As usual, I cut mine larger so I could square them up perfectly. If you choose to cut larger, add about 1/8" to 1/4" to each.

My fabrics. Sweet and simple.

First, we need to make the 4 units that will make the pinwheel effect. Lay out your triangles like this.

Sew two short sides of the white and gray together to form a large triangle. Press to the dark.

Then, sew the two triangles together and trim to 3 1/2" - if you cut yours larger. Just trim off the dog ears if you cut yours exact. If trimming down, use the diagonal lines on your ruler as a guide to make the points on the large triangle equal and the point on the white/gray triangle go to the corner. as shown. It's easy to get these off when trimming. If they aren't "perfect" the points in the center and the outsides will be cut off.

Make 4 units. Place them so the pinwheel effect shows and sew together like a 4-patch block.

To get the 8 points perfect in the center, I recommend pressing the seams open when joining the 4 units together. This photo doesn't show it too clearly, but when you press these seams open, a small triangle will appear (top center). Match these up when joining the two halves of the block and pin. Your seam will go right across the tip of the triangle and all 8 points will show on the front of the block. I then pressed the last seam open as well so there isn't a huge lumpy bump in the center of the block. Your block should be 6 1/2".

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