Let’s sew together a 12″ Union Star Quilt Block today! This one looks a lot harder than it really is so let’s get started!
Fabric Requirements for a 12" Finished Union Star Quilt Block:
- Light/White: 24 – 2.5″ squares, 2 – 3″ squares, and 1 – 4.5″ square
- Medium/Purple: 8 – 2.5″ x 4.5″ rectangles, and 2 – 3″ squares
- Dark/Green: 4 – 2.5″ x 4.5″ rectangles, and 4 – 2.5″ squares
Flying Geese Units:
First you need to make four Flying Geese units using the 4 Dark/Green 2.5″ x 4.5″ rectangles and 8 of the Light/White 2.5" squares. You can find my tutorial for sewing Flying Geese at https://fabric-406.myshopify.com/blogs/fabric406-blog/how-to-sew-a-basic-flying-geese-block
Diagonal Stripe Unit:
Make 8 of these Diagonal Stripe units using 8 Medium/Purple 2.5″ x 4.5″ rectangles and 16 Light/White 2.5″ squares. Make sure that four have the stripe going one way and four have the stripe going the other way! This is basically half of a Snowball block and you can find my tutorial for that block here: https://fabric-406.myshopify.com/blogs/fabric406-blog/how-to-sew-a-basic-snowball-block
Half-Square Triangle Unit:
Now you need to sew 4 Half-Square Triangle (HST) units using the 4 Light/White 3″ squares and the 4 Medium/Purple 3″ squares. You can find my tutorial for HSTs here: https://fabric-406.myshopify.com/blogs/fabric406-blog/how-to-sew-a-basic-half-square-triangle-block
Sewing the Center Unit:
Lay out the 4 Half-Square Triangle units, the 4 Flying Geese units, and the 4.5″ White/Light square (center square) as shown below.
Sew the units into three rows and …
Press the seam allowances away from the Flying Geese units as shown in the picture below.
Sew the three rows together and …
You guessed it – press the seam allowances toward the center of the block.
Sewing the Outside Borders:
Match up two mirrored Diagonal Stripe units and sew together as shown in the picture below.
Press the seam allowance open as shown in the picture below. Repeat to make a total of four units.
Sew two of these units to opposite sides of the center unit.
And press the seam allowances toward the center of the block.
Sew two Dark/Green 2.5″ squares to each end of one of the remaining joined Diagonal Stripe units as shown in the picture below.
Press the seam allowances toward the Dark/Green 2.5″ squares as shown in the picture below. Repeat to make a total of two units.
Lay out the above units as shown in the picture below.
Sew the units together – almost done!
Press seam allowances toward the outside of the block as shown below. Trim/square up the block to 12.5″ if necessary. You are done!
This pretty Union Star quilt block is simply made up of easy to sew units so it looks much harder than it really is. I hope you’ve enjoyed this block.