How to Make Perfect Half-Rectangle Triangle Units

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No Sewing of Triangles Together and No Special Ruler Needed!

If you’ve been quilting for long you’ve surely had to make half-square triangles. There are many ways to simplify the process (we like the 8 at a time method found here).

Half-rectangle triangles can also be simplified so you don’t need to sew stretchy biased-edged triangles together. The process is a little trickier than making squares but a time-saver nonetheless.

How to Make Perfect Half-Rectangle Triangle Units

Jacquelynne Steves demonstrate how to do it in the following video. You don’t need any special rulers, although a quarter-inch seam marker will be handy.

The sizes in the video are off so refer to the following formula.

“To figure out what size rectangles to cut, take the FINISHED size of your HRT unit, and add 1 1/2″ to the short measurement, and 1 3/4″ to the long measurement. For example:

  • For a finished size of unit 4 x 5″ (4 1/2 x 5 1/2″ including seam allowance)  —> cut your rectangles 5 1/2 x 6 3/4″.”

Click here to watch the video at YouTube if it doesn’t play on your device.

You’ll find Jacquelynne’s written instructions at the following tutorial.

Click here for the free “Half Rectangle Triangle Tutorial (no special ruler required!)”.


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