• Craft Cotton Co

Half Square Triangle Cushion

Project by Gill Rich


I thought these lovely metallic fabrics would make a very effective cushion cover and decided on a half square triangle design and one central solid block.




To make the cushion, you will need the following:-

● One pack of fat quarters I chose Tropical Metallics from Craft Cotton Co

● Sewing thread

● Co-ordinating backing fabric

● Rotary Cutter and mat

● Quilting square patchwork ruler

● Pins



Decide which fabrics you wish to use to make the half square triangle blocks and the solid block for the centre of the cushion. The unfinished blocks should measure

6.5” square. Firstly cut your central block 6.5” square and set aside.


For each 6.5” block you will need to cut two squares from both fabrics measuring 3.5” (eg Fabric A and Fabric B). Place Fabric A an top of Fabric B with right sides together. Draw a line from one corner to the opposite corner and pin together on each side.



Now you need to stitch ¼” on each side of the line and cut along your drawn line. Press flat with seams open. Repeat for the other two squares. You should now have four half square triangles. Repeat these two steps for Fabric C and Fabric D.



Now to decide on your placement of these half square triangles in your block, it's up to you if you want to do a different design but I had two matching triangles on each opposite side and one of each colour on the bottom and top like this.



Once you have completed all eight triangle blocks, place them out until you are happy with your design and then we can sew them together. Take the top three blocks and stitch together down each side using a ¼” seam allowance. Press flat with your seams open. Repeat for the second and third rows. Next stitch your three rows together in the same manner. Your cushion top is now complete.



I did an envelope style back for the cushion. To do this you need to cut two pieces of your backing fabric 13” by 19”. On one long side of each piece, fold over a ½” and press then fold over another ½” and press again. Stitch close to the edge of the folded over edges. Repeat for the other side.



With your cushion top facing up, place the two backing pieces rights sides down with your folded edges in the middle, they should overlap by about 4” in the middle. Stitch all the way around your cushion with a ¼” seam allowance. I finish my seams by overlocking the edges but if you don't have an overlocker, a zig zag stitch is fine.

Cut your corners and turn your cushion right side out pushing out the corners as far as they will go.

Give your cushion a good press and there you have a lovely addition to your cushion collection!



I hope you enjoyed this tutorial. If you wish, you can follow me on Instagram

@designbygill66 or Facebook at Design by Gill.



Made by Gill Rich for The Craft Cotton Co 2022.

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