Fast way to do 8 at a time half square triangles (HST) with straight of grain edges!

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by , 11-02-2012 at 09:19 AM (656 Views)
Quote Originally Posted by LucyInTheSky View Post
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

Put 2 squares right side together. Draw 2 diagonal lines on one
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Sew 1/4 on either side of each line (4 seams)
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Using the center as a guide, cut a horizontal and vertical line
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These look familiar!
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Cut along your pencil lines
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Tada! Half square triangle
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A tad over 2. Trim to size
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  1. Tazz's Avatar
    Wow!, for a beginner quilter, that is so easy and clear. I certainly will use this method. Thanks for the tutorial and the extra measurements already figured out for us.

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