8 Half Square Triangles at Once Tutorial

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8 half square triangles sewn at one time?  Can that really even happen?

I am one that sews fast.  The faster the better.  I even have been accused to shaking the table with my sewing machine speed.

This is the neatest little trick ever!  Half square triangles can get a little boring.  Especially if you need a lot of them!

I am always on the lookout for new ways to speed up the sewing and this one is my current favorite.

8 half square triangles tutorial | patchworkposse | easy sewing projects and free quilt patterns

Materials Needed:

1 background

1 other

It doesn’t matter what size you start with, just as long as they are equal in size.  For this tutorial I used 2– 9″ X 9″ squares.

These ended up at 4″ X 4″ unfinished.  They could also be squared up to a smaller size if needed.  3 1/2″ square would equal to a 12 1/2″ unfinished quilt block if you were to sew all 8 of them together for a quilt block.


8 Half Square Triangles at Once Instructions:

1)  Lay your squares right sides together

2)  With a ruler and pencil, mark a line from corner to corner.  Repeat for opposite corner.


3)  Mark the middle of the square on either side also

4)  Sew a SCANT 1/4″ from the CORNER TO CORNER lines

5)  Sew again on the other side of the drawn line

6)  Repeat steps 4 and 5 for the other corner to corner line


7)  Cut on the drawn lines

8)  Iron and square to size


9)  If you have a project for them to go into….you are set to go. If not, you can play with the layout of the squares.

Here are 4 variations:


Have you tried this method before?  Have any suggestions or tips to share?


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