Quilting Tips and Techniques: Easy Half Square Triangle Units
Half square triangle units, like the pieces in this quilt block, are possibly the most commonly used patchwork component. Sometimes abbreviated as HST or called a triangle square, the units are squares that are composed of two triangles. Each triangle occupies half of the square's space, leading to the name half square triangle unit.
You can sew two triangles together to create a HST unit, but it's easier, and often more accurate to quick piece them, since it eliminates the need to handle the stretchy bias edges of individual triangles.
There are several ways to quick piece HSTs, but my favorite is this easy sandwich method, where two squares of fabric are sewn together along the diagonal and then cut apart to create two identical HSTs.
The sandwich method is a perfect technique to use when you're making a scrap quilt or need a few HST units in specific color combos -- it helps you make great use of fabric scraps or small yardages. However, I use it even when I'm making lots and lots of identical units.
