June 21, 2016

Perfect Half Square Triangles

I have been making many Half Square Triangles lately as I test patterns I designed. Of all the methods I have tried I liked one the most, and this is what I will demonstrate today. It involves using a ruler which I have had for a very long time but never used before (I am the only one who does that, right?).

The ruler is called Strip Tube Ruler and it is super super easy to use. I could not find any directions with it (I told you, I purchased it eons ago) so I went to their website and printed out the two-page instruction sheet. OMGoodness - I don't think I will stop making HSTs any time soon.

Here is how you use the ruler:

With RST, stitch together two strips of fabric on both long sides. The width of the strips will depend on the finished size of your HSTs. I press the strips after stitching to set the stitches.

If you want, say, 3" HSTs , place the line on the ruler which corresponds to 3" on the bottom seam line and cut on both sides using the rotary cutter.

Then, flip the ruler and this time place the 3" line of the ruler against the top seam of the strip (or tube).

Cut it and flip the ruler again, placing its 3" line on the bottom seam of the strip set. Repeat these steps until you have cut all the HSTs you need. Then, press them open and trim the ears.

This is the block I was making. This ruler has been placed on the very front of my ruler rack now. The best part of it is that you can make HSTs from 1-1/2" all the way up to 9" with no fabric waste. However, you can actually make them smaller by making the 1-1/2" size and then trimming it down to your desired [mini] size.

Which method do you prefer for making HSTs? Have you tried this one using a strip set (or tube)? This is such a breeze now... No more cutting patches with weird measurements. It works for me...

Have fun today,


  1. We're SO glad you love the Strip Tube Ruler! Here are a couple more little tips for using your ruler for HST:

    1. Instead of turning your ruler for each cut, you can flip your strip set!
    2. You can trim dog ears too! Keep your block folded at the stitch, then place the same measurement on your stitching line, but make the ruler face the opposite direction. So the corner of your block and the corner of your ruler are pointing away from each other. Then, with your ruler on the same stitching line measurement, you should be ready to trim the dog ears!

    Both of these tips came from customers who experimented, so we're always happy to see more discoveries! Hope this helps you have more fun!

    A Cozy Gal :)

  2. I love your HSTs! I also use this method to make pairs of 60 degree triangles which form diamonds. It's an easy way to make a "Pyramid" or "Hundreds of Triangles" quilt. I combine lots of different fabrics, place the diamonds on the design wall and then stitch the rows together on the diagonal (like stitching blocks on point).

  3. Your triangles look great and this looks so easy, but don't you end up with the bias along the edges of the triangles? That would be great in some circumstances but not all.
    --Nancy. (ndmessier @ aol.com, joyforgrace.blogspot.com)

  4. Super tutorial! Thanks! I too have a Strip Tube ruler. I made one quilt with it and it has been in a drawer ever since. I am definitely recommissioning it for HST's!

  5. That looks brilliant. I have been using the Bloc Loc ruler and that works well for me.

  6. Yes this method looks easy peasy for HST's.

    tushay3 (at) yahoo (dot) com

  7. I may have to look for this tool! In the meantime, I love my Bloc Loc ruler! I've been using it about a year now, and wonder how I did without it.


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