This is a tutorial on how to make 8 half square triangles (HST) at a time. What’s nice with this method vs the 4 at a time is that on this, the bias is where it’s supposed to be and your final edges are on the straight of grain (since that has messed me up with the 4 at a time method where you sew on the straight of grain and end up with bias edges).

Math: I started with 5” squares and my HSTs were each slightly over 2” (They will ultimately finish at 1.5” in the quilt). You will lose about 1” with this method. So if you want HSTs to ultimately be 4” finished in the quilt, they would be 4.5” unfinished. You would want to start with 4.5” x 2 + 1” = 10” square. If you want 6.5” finished, 7” unfinished, you would start with 7” x 2 + 1” = 15” square.

Let me know if you have questions

Thanks! That's a great way to do them

Thank you!!!

Thanks for this. Should save me lots of time as I tend to do them one at a time. The maths makes it very adaptable so thanks again.
Sue

thank you so much for this. Very clear and I will definitely try this method. As a newbie I really appreciate the math.

thank you !!! this is really awesome..I must give it a try!!

Good for you!!

Looks easy enough!

Thanks. Very useful

Thanks for the very useful info. :-)