Sampler Class: Partial Seams

Double Windmill #3
Double Windmill #3

We are going to talk about partial seams. Partial seams are a way to create a more complex looking block without using truly difficult piecing techniques. Even a relative beginner can navigate partial seams successfully.

Supply list:

Directions:

1. Prewash and press fabric

2. Select fabrics to fit the color scheme of your other blocks. You need contrast between the various pieces.

Partial Seam Final Colors
Partial Seam Final Colors

The one red triangle with the white curves might not be exactly right, but it will look fine in the overall quilt.

3. Cut out pieces using the chart. Press as you cut if necessary.

Partial Seams: Sew Triangles Together
Partial Seams: Sew Triangles Together

4. As we discussed before, sew smallest to largest. I started with the matching small triangles. Sew carefully without yanking the bias.

Press flat, then press to the red
Press flat, then press to the red

5. Press flat and then press to the red. Press carefully without distorting the bias.

Partial Seam Triangles Sewn
Partial Seam Triangles Sewn

6. Place the newly sewn triangles back in place back on your design wall.

Partial Seam: Sew other like triangles
Partial Seam: Sew other like triangles

7. Sew the similar triangles, press and place back in place.

Remember, you are sewing from smallest to largest. This means that you are creating larger and larger sections until the whole block is done.

Patches Sewn in 4 sections
Patches Sewn in 4 sections

8. Once the newly sewn patches are back in place, it is fairly easy to see the next logical step. The large turquoise triangles (mini-Pearl Bracelets fabric in the example) should be sewn to your two triangles. This will make a square.

Sew small triangles to larger triangle
Sew small triangles to larger triangle

9. Sew the two small triangles, which are now sewn together (step 4-7), to the large turquoise triangle. This step makes the triangles into a square.

Place sewn squares on to the design wall
Place sewn squares on to the design wall

10. Press flat and then press to the larger triangle. Press carefully without distorting the bias. Place the squares back on the design wall.

Sew squares to solid fabric
Sew squares to solid fabric

11. Sew the solid, rectangle-ish pieces to the squares you just sewed.

Place sewn sections back on the design wall
Place sewn sections back on the design wall

12. Place the sewn sections back on the design wall.

Sew small red triangles to solid triangles
Sew small red triangles to solid triangles

13. Sew small red triangles to solid triangles

Sew new section to square
Sew new section to square

14. Sew new section to your squares.

Place sewn sections back on the design wall
Place sewn sections back on the design wall

15. Place the sewn sections back on the design wall.

Now you have 4 major sections plus the center and 4 corner patches. Now we are going to get serious with partial seaming.

Take the center and section 1
Take the center and section 1

16. Take the center and section 1.

Sew about 3/4s of the way down the center square seam
Sew about 3/4s of the way down the center square seam

17. Put section 1 under the needle with the center square on top. Line the center square up with the intersection of the red triangle and the Pearl Bracelets triangle (my fabrics used as a guide).

Backstitch at the end of the seam to secure the seam since you will be playing with it.

Press seam towards center
Press seam towards center

18. Press seam towards center square. Press carefully since the whole seam isn’t sewn.

Partially sewn seam
Partially sewn seam
Partially sewn seam - detail
Partially sewn seam – detail

The sewn piece will flip up. You can see about how much to sew in the picture above.

19. Take section 2 and lay it over section one and the center square with right sides together. The lengths should be about the same.

Section 2 sewn to section 1
Section 2 sewn to section 1
Section 2 sewn to section 1 + center square
Section 2 sewn to section 1 + center square

Completing the sewing of section 2 makes the section look like it is possible to sew on section 3.

Section 3 right side down
Section 3 right side down
End of section 3 seam
End of section 3 seam

20. Lay section 3 over section 2 and the center square. Line up the edges so they are event.

Center section almost done
Center section almost done

Now your center section is almost done.

Tuck section 1 under section 2
Tuck section 1 under section 2

21. Prepare to sew section 4 to the larger piece you have made by tucking section 1 under section 2. You might want to use a pin to keep it out of the way.

22. Lay section 4 over section 3, right sides together.

Section 4 sewn
Section 4 sewn

Section 4 is sewn. Keep section 1 tucked under and out of the way for the next step. Get ready to complete your partial seam.

Fold center section up
Fold center section up
Fold section up - detail
Fold section up – detail

23. Fold the raw edges between section 1 and section 4 up like half of it wasn’t sewn. Use a pin near the end of the seam (edge of the section) to keep it in place.

Position piece near pin
Position piece near pin
Start sewing near pin - detail
Start sewing near pin – detail

24. Position piece so you start sewing near the pin.

Now you will sew the partial seam.

Sew partial seam
Sew partial seam
Sew partial seam
Sew partial seam

25. Once you start sewing from the pin (noted above), you will see the end of the first seam you partially sewed. Sew slowly to the end of previous seam line.

Center section sewn
Center section sewn

Hooray!!! You have finished the center section

Now you have to sew the corner triangles to the center section to finish the block.

Trim off corners
Trim off corners

26. Trim off corners of large corner triangles before you sew them on. You can trim them all at once or one at a time, which is what I do.

Lay out triangle on sewn section
Lay out triangle on sewn section

27. Lay triangle on the sewn section, lining up trimmed corners even with edge of sewn section.

First corner triangle sewn
First corner triangle sewn

Your piece will look like the above image. Follow steps 26-27 for all corner triangles.

Finished Block
Finished Block

You are now finished! Great job!

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Other resources and patterns regarding partial seams:

  • Chain Link from Link to the 30’s: Making the Quilts We Didn’t Inherit (That Patchwork Place) by Kay Connors and Karen Earlywine. I saw it on the Patchwork Play blog made with a great red background. The maker calls it Shelburne Tartan on that blog.
  • Double Windmill block. I saw an example on the Swim Bike Quilt blog.
  • Laura Nownes tutorial on partial seams. Good tip about avoiding puckering on the last seam. I don’t agree with not pressing the seams until the end. Avoid pressing the first half seam, but press all the rest.
  • Jinny Beyer tutorial. Not sure I can compete. 😉

Author: Jaye

Quiltmaker who enjoys writing and frozen chocolate covered bananas.