If you are in need of making many many half square triangles, the magic 8 method is the right way to make them. With this method of doing half square triangles, you make eight HSTs at a time. There are some other methods to make half square triangles, where you make two or four HSTs at one time also. Half square triangles are one of the most used quilt blocks, either with other pattern combinations or alone. It is good  to know how to make these HSTs in a paractical way.
In this tutorial I will show you how to make 8 half square triangles at one time. 


  1. You need two same size squares of fabric in different colors. I used 10" squares here. Mark a diagonal line across both diagonals on the wrong side of the fabric. It is shown in the image below.
  2. Sew along with 1/4" seam allowance on both sides of the marked lines.
  3. Using your rotary cutter, cut the square into eight. You will cut horizontally, vertically and diagonally.
  4. Now you have 8 half square triangles. Open the blocks and press with finger or iron, seams open.
  5. Trim the exess pieces, using your rotary cutter and ruler. The finished size of each HST unit meaaures 4.5 "
  6. You are done! Now 8 HSTs are ready to be assembled in a quilt.
  7. Finally below is a cutting chart for half square triangle units for the magic 8 method.
I hope that this tutorial will be useful for you. Enjoy it!
Have a look at the video also to see the tutorial


Hatun Çomak

I'm Hatun from Turkiye. I love quilting and patchwork and this is my patchworld. I share my projects, process, patterns and tutorials here in my blog. .