Free Pattern - Interlocking O's Quilt Block

Posted by Elaine Huff on

Today we're going to sew together this modern-looking traditional quilt block called Interlocking O's. The pattern is attributed to Doris Dace but I couldn't find any more information about it other than that. Let's get to it!

Fabric Requirements for a 16" Traditional Interlocking O's Quilt Block:

  • Light/Yellow: 4 - 2.5" x 4.5" rectangles
  • Medium/Blue: 4 - 2.5" squares, 2 - 2.5" x 4.5" rectangles, 4 - 2.5" x 6.5" rectangles, and 2 - 2.5" x 8.5" rectangles
  • Dark/Black: 4 - 2.5" squares, 2 - 2.5" x 4.5" rectangles, 4 - 2.5" x 6.5" rectangles, and 2 - 2.5" x 8.5" rectangles

fabric requirements

Sewing Directions:

Step 1:

Sew together a Light/Yellow 2.5" x 4.5" rectangles and a Medium/Blue 2.5" square and press the seam allowance toward the Medium/Blue fabric as shown in the picture below. Repeat to make 2 of these Step 1 units. If you are making a lot of these blocks, this step could be done with the strip-piecing method.

interlocking o 1

Step 2:

Repeat Step 1 using the Medium/Blue 2.5" x 4.5" rectangles and the Dark/Black 2.5" squares.

interlocking o 2

Step 3:

Sew together one Step 1 unit and one Step 2 unit as shown in the picture below. 

interlocking o 3

Press the seam allowance away from the Light/Yellow fabric as shown below. Repeat Step 3 for a total of two units.

interlocking o 4

Step 4:

Sew a Dark/Black 2.5" x 6.5" rectangle to both long sides of the Step 3 unit as shown in the picture below.

interlocking o 5

And press the seam allowances toward the Dark/Black fabric as shown below. Repeat Step 4 for a total of two units.

interlocking o 4-2

Step 5:

Sew a Dark/Black 2.5" x 8.5" rectangle to side of the Step 4 unit with the Medium/Blue fabric as shown in the picture below and press the seam allowance toward the center of the unit. (Forgot to take a picture of the back of this unit so you could see the pressing direction - sorry!) Repeat for a total of two units.

interlocking o 5-1

Step 6:

Repeat Steps 1 through 5 using the Light/Yellow 2.5" x 4.5" rectangles and Dark/Black 2.5" squares;

interlocking o 6-1

The Dark/Black 2.5" x 4.5" rectangles and the Medium/Blue 2.5" squares;

interlocking o 6-2

Sew together;

interlocking o 6-2

Add the Medium/Blue 2.5" x 6.5" rectangles; and

interlocking 6-3

The Medium/Blue 2.5" x 8.5" rectangle.

interlocking 6-5

Putting It All Together:

Step 7:

Lay out the four Step 6 units as shown in the picture below.

interlocking 7

Step 8:

Now you can sew the units together like a simple Four Patch block. First sew the units into two rows as shown in the picture below.

interlocking o 8

Step 9:

And press the seam allowances in opposite directions as you can see in the picture below.

interlocking o 9

Step 10:

Sew the two rows together and you are done!

interlocking o 10

Step 11:

Press the seam allowance. I used the tweak/twirl/furl method as you can see in the picture below.

interlocking o 11

In Conclusion:

While this Interlocking O's quilt block is very easy to stitch, I got totally confused with the color placement! I highly recommend laying out all the pieces to make sure they are in the right spot. I think this is a great block for a guy's quilt or baby quilt. I used 2.5" strips and so the block turned out 16" square (finished) or 16.5" square (unfinished). If you wanted a smaller block, I would try using 2" strips and that would make a 12" block - just adjust the length of the rectangles accordingly.

So what do you think of this block? If you give it a try, I'd love to see a picture of it!

Until next time,

Happy Quilting!

Elaine 


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18 comments

  • I have blues and yellows with pops of red calico. But haven’t been inspired as to a pattern. I think this is it! Looking forward to piecing. Great instructions. Thank you.

    Caroline on
  • Attempted this pattern (I am a newbie at quilting but its looking good using blue and yellow spot and ‘Os’ of orange spot .Looks better than it sounds

    Margaret on
  • You pattern is very well explained. I made it as described, BUT, you mentioned that to make a smaller square, you could reduce the squares to 2 inches. That does work but you are left with rectangles, not squares. Mine finished at 7.5 × 6.25. It is still pretty but, for a beginner, that might be too confusing.

    Margaret Eberle on
  • Love the pattern, will make agsin

    Maree on
  • This block will lend itself quite to a scrap quilt. If it’s too busy, sashing and cornerstones. Thanx for the tutorial.

    Carmen on

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