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Double Star Quilt Block Pattern

From our Free Quilt Block Pattern Library


Double Star quilt block tutorial starts here.

The Double Star quilt block pattern is made from a hybrid of a half and quarter square triangles, and rectangles and a square. It uses four fabrics.

Skill Level: Confident beginner

Grid: 5x5

AKA: Hope of Hartford

In order to piece the unit we'll use a technique known as 'partial seams' or 'puzzle piecing'. No special tools, rulers or templates are required. The patches are all rotary cut.

It's a fun little block to make that looks more complicated than it is. A couple of pins makes everything easy.





Construction Instructions

The sample Double Star in this tutorial is 7-1/2" finished/8" unfinished.

All seam allowances (SA) are 1/4".

When you are instructed to press, first press the pieced unit flat to set the seams.

Then open the patch, pressing from the front.

The direction to press the SA is included at each step in this tutorial.

Several common abbreviations are used:

  • SA - seam allowance
  • QST - quarter square triangle
  • RST - right sides together
  • BAC - Background fabric


Step 1: Cut the fabric patches

Double Star quilt block designDouble Star block design

For QST units, I like to start with over-sized patches and trim to actual size after stitching.

For the patches marked with an asterisk (*) in the chart below, I added an extra 3/8" to the listed dimensions before cutting.

After stitching, I cut them down to the perfect size (there's a chart in the instructions right where you need this information.)

Rotary cutting instructions for Double Star quilt block

Because the finished design looks like a flower to me, some of the patches are referred to as 'petals'. I hope that isn't confusing.

While the block is colored with a light (white) background above, in the sample I chose a medium blue value for the effect that I wanted.

Choose fabrics in the colors that work best for you!


Generations Quilt Patterns logo

Cutting Chart for a
Double Star Quilt Block

~Traditional Piecing ~

PatchFabricQtyFinished Block Size Sub
Cut
7 1/2" 10" 12 1/2" 15"
*1 BAC 1 4 1/4" x 4 1/4" 5 1/4" x 5 1/4" 6 1/4" x 6 1/4" 7 1/4" x 7 1/4" Symbol for a quarter square triangle
*2 Small
Petal
1 4 1/4" x 4 1/4" 5 1/4" x 5 1/4" 6 1/4" x 6 1/4" 7 1/4" x 7 1/4" Symbol for a QST
*3 Large
Petal
2 3 7/8" x 3 7/8" 4 7/8" x 4 7/8" 5 7/8" x 5 7/8" 6 7/8" x 6 7/8" Symbol for a HST
4 BAC 4 2" x 3 1/2" 2 1/2" x 4 1/2" 3" x 5-1/2" 3 1/2" x 6 1/2" na
5 Center 1 2" x 2" 2 1/2" x 2 1/2" 3" x 3" 3 1/2" x 3 1/2" na
Unfinished Block Size 8 " 10 1/2" 13" 15 1/2" --
Grid Size 1 1/2" 2" 2 1/2" 3" --

In the photo below I have not yet sub-cut the Large Star Points (yellow print) squares.

These are the patches needed for this 7-1/2 inch Double Star quilt block


Step 2: Assemble the units

Stitch the QST units

The QST units in this block are pieced from individually cut patches. The units are identical. There is no mirror imaging.

With RST, align the edges of one background triangle (#1) to one Small Petal triangle (#2). Double check the position of the patches to insure they are in the right position. Stitch.

Repeat for the three remaining pairs. To prevent sewing errors, keep the patches in the same order—the blue background fabric is always on top in the photo.


Sew the QSTs first

The red arrow points to my anchor cloth

Press SA toward the darker patch. In this sample block it's toward the blue #1. If you use a lighter background fabric this may be toward #2 instead.

You're ready for the next seam.


Patches ready to assemble for the next step

Align the long edge of this pieced #1/#2 unit with the long edge of the Large Petal triangle (#3). Stitch.


Stitch the second seam of the QST unit

Press SAs toward the larger triangle(#3) to reduce bulk.

If you need a refresher on trimming QST units to size, click here to review this technique in Quarter Square Triangle, Technique #1, Steps 6-7. 

The center measurement for our Double star quilt block is 1-3/4".

Repeat for the remaining 3 QST units.


Add the background rectangle

With RST, align the long edge of a background rectangle (#4) with the Small Petal side of the QST unit. Pin if needed. Stitch.


Add the background rectangle to the quarter square triangle unit

The units are stitched together with the pieced QST on top. That way, I can
ensure that the seam allowances don't flip over and twist during stitching.

Press. SA toward the background fabric. Repeat for the 3 remaining units.


Step 3: Assemble the Double Star block

To construct this block the first seam is a partial one. This is done to create an edge equal in length to the remaining units.

With RST, align the center square (#5) with the corner of the Large Petal fabric. Pin if needed. You will stitch along the long side of the QST unit for a little more than half the length of the center square.

Our stitching is between the black lines.


Sew a partial seam to attach the center square

Sew a bit more than half the seam to attach the center
square to the first quarter square triangle unit

Press with SA towards the center square.

With RST, align the next QST unit with the edge of the Center/QST unit. Stitch.

Press. Seam allowance towards the QST.


Stitch the second section to the first

Repeat for the third unit, pressing towards the center square.


Repeat for the third section

Add the fourth. Pins were helpful to keep the layers evenly together during sewing. Press the sewn SA away from the center.


Stitch the fourth unit to the first three


This is how the block looks from the front before pinning the last, partial seamline.


The unit before stitching the last seam


Now things can get a bit lumpy. Nothing that a few pins can't tame.

In the photo below, you can see how I've pinned to align and hold the edges. The far right pin is inserted past the original stitching line. This is to help hold things flat and out of the way.



Pinning the last seam


Stitch this final bit.

Press, SA towards the center square.

This is how the block looks from the back.


Double Star quilt block viewed from the back side


Your finished Double Star Quilt Block from the front.


The finished Double Star Quilt block


Ready for more
star-spangled quilt block patterns?

You've finished your Double Star quilt block and you're ready for more!

Check out our Free Quilt Block Patterns Library to find other star blocks to make your next quilt sparkle!


There's more quilt patterns
than there are stars in the sky...

Check out these star quilt patterns available on Amazon.com...on the double! :D


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