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