Supernova cushions! How to sew the rectangular cushion

How to sew a rectangle super nova cushion

Hooray here comes the second in our series of 60-degree triangle patchwork cushion tutorials by the ever-so-clever Jemima Flendt. This is the second in our set of three Supernova tutorials... read on for how to sew-up the rectangle cushion of the trio. You can find the small Super Nova cushions to match here on the blog and we’ll be posting the large hexagon cushion soon. But for now let’s focus on the rectangular cushion of the set! Don’t forget to check out more of Jemima’s designs over at or follow her on instagram @tiedwitharibbon.

Super Nova patchwork cushions

How to sew the rectangle cushion

You will need…

See our Supernova Small Cushion tutorial for the fabric requirements for the set of three cushions. If you’re just making this cushion, you’ll need roughly a third of the total requirements but you may need to do a little quilt maths before you go fabric shopping!


  • Seam allowances are 14in, unless otherwise noted.
  • RST = right sides together.
  • WOF = width of fabric.
  • WST = wrong sides together.

rectangle cushion

Rectangle cushion: finished size

2412in x 15in approx

Cutting out

Step one: From the white fabric cut three (3) 312in x WOF strips. Subcut to give thirty (30) 312in 60-degree triangles.

How to cut 60-degree triangles

Step two: From each of nine (9) different print fabrics cut five (5) 312in 60-degree triangles.

Step three: From the cushion back fabric cut two (2) 1612in x 1512in rectangles.

Step four: From the binding fabric cut three (3) 212in x WOF strips.

Making the cushion

Step five: Arrange the white and print fabric triangles into five rows of fifteen triangles each. experimenting with different print placements and rotating alternate triangles by 180 degrees so that the triangles tessellate.

How to sew a rectangle patchwork cushion layout

Step six: Repeat steps 6–12 from the small cushion tutorial to make the cushion top, this time trimming to 25in x 1512in square.

Step seven: Layer the cushion top with the 25in x 1512in batting rectangle and then repeat step 13 from the small cushion tutorial to quilt and bind the cushion.

Patchwork triangles

Step eight: Repeat step 14 from the small cushion tutorial with the 1512in x 1612in rectangles, this time neatening one short edge of each piece.

Step nine: Place the quilted cushion front right side down with the 1512in edges top and bottom. Repeat steps 15–17 from the small cushion tutorial to complete the cushion.

how to sew a rectangle patchwork cushion

Complete the Supernova set!

Enjoyed making this traingle-tastic patchwork cushion? Why not make a small cushion and large hexagon cushion to match?

How to sew a small cushion