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Sunburst Triangle Fold Coaster Sewing Pattern

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Thanks for the great response to the Granny’s Style Rag Rug I posted a few days ago. I was asked to create a tutorial, so I woke up early this morning and took step-by-step photos to show you how to fold and sew those tiny triangles and make them into Triangle Fold Coasters.

Learn how to sew a sunburst coaster with our sewing tutorial. Adapt this fabric scrap-buster triangle fold coaster method to make a larger rug.

Since I had limited fabric scraps to make a big rag rug, I made a small one instead—a triangle fold coaster. It’s a rushed job, not like my previous tutorials, which took a few days to complete. I hope you will think that the quality is good.

how to fold triangle

It is now late afternoon while I write this post, and I need some super-duper-booster coffee to keep my eyes wide open.

However, I am tired and left my craft room in a mess because I need to rush out to work this morning. However, I am happy and content with what I have done as long as it is related to creative handicrafts and handmade.

Most importantly, I have you to read my creations 🙂 So, throw more requests if you need one, I will put them in the “Things-To-Do List” and will plan for it 🙂

Learn how to sew a sunburst coaster with our sewing tutorial. Adapt this fabric scrap-buster triangle fold coaster method to make a larger rug.

How To Sew A Triangle Fold Coaster

Materials and Tools:
1. Plenty of fabrics, it can be new fabric or fabric scraps you have collected from previous sewing projects
2. A pair of scissors
3. Iron
4. Some pins
5. Matching threads
6. Sewing machine

Folding Triangle 1

Cut the fabric to 2″ x 2.5″. If you want a bigger triangle, you can enlarge the dimension. Just like many creative handmade items, there is no fixed dimension for the pattern; it all depends on your creation and how you want your design to be.

Folding Triangle 2

Fold it diagonally and iron it. You may set the heat to high but lay a piece of fabric to protect your iron board from burn marks. Spray some water to make a crispier crease, if needed.

Folding Triangle 3

Fold this way and iron again.

Folding Triangle 4

Lastly, fold again, and iron a little longer to set the shape.

Folding Triangle 5

This is another side of the triangle. Continue doing it until you finish a substantial amount of triangles enough to complete your entire project.

Triangle Fold Coaster

There you are, a pile of triangles ready for the coaster after an hour of hard work 🙂


For the triangle fold coaster, we need to prepare a base (a blue round shape) for sewing the triangles. The base can be a round shape, rectangle, square, or just any shape you want, as long as you know how to arrange your triangles on it.

Triangle Fold Coaster

Arrange the triangle onto the base with 1/3 overlap on the next triangle. Adjust the position until the spacing and shape look balanced. Secure it with some pins.


Machine sew it. It will be a little thick to go through the presser foot. Press the paddle lightly and sew slowly, following the curvature of the coaster base.


Repeat the triangle arrangement and machine sew for each layer.


This is the final layer of the triangle fold coaster. After sewing it, I added a centerpiece to cover up all the messy frays of the triangles. Zig-zag sew the centerpiece, and it is done 😉


Hope you enjoy sewing it!

Learn how to sew a sunburst coaster with our sewing tutorial. Adapt this fabric scrap-buster triangle fold coaster method to make a larger rug.

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Monday 5th of December 2022

Awesome pattern,very good instruction,love it


Thursday 19th of December 2013

I'm so glad that you made this tutorial. I really liked the round version. I hope to make a rug someday. Thank you.


Wednesday 16th of October 2013

To be exact: prairie points are not folded like that - but a lovely, interesting pattern anyhow!


Wednesday 6th of March 2013

the triangles are called prairie points when quilting!

Craft Passion

Wednesday 6th of March 2013

Cool! Thanks for the name, Crystal!


Monday 3rd of September 2012

How about using a hair straightener for these tiny pieces? You could probably save your ironing board from a few burns using this method!

Craft Passion

Tuesday 4th of September 2012

This is a great idea, Erica. If it works well, may be I can do it in front of the TV during commercial break :)