Quarter square triangle units are squares made of four equal triangles stitched together. It is sometimes called an hourglass.
The obvious way to make these is to cut triangles and stitch them together.
Cutting
To begin, cut two squares of fabric – one light and one dark
The squares should be cut 1-1/4″ larger than you want the finished unit to be. In this case, for a 4″ unit, cut 5-1/4″.

Cut these squares on both diagonals to make triangles.

Stitching
Join the triangles in pairs, stitching on one of the short legs. Be sure to stitch both pairs in the same orientation.

Open and press. You will clearly see the two sides of the QST.

Stitch together, being sure to line up the dark to the light.

Open and press.
If necessary, trim the edges to make it 4-1/2″ square. This will finish at 4″ with a 1/2″ seam allowance.

You’re done!

What’s Good
- intuitive, easy to remember
- no marking
What’s not Good
- bias edges
When to use this method
- when you cut and stitch precisely
- to make a scrappy quilt
Rating: 2 out of 5
This method usually needs to be trimmed to get the exact size and the finished square has bias edges. That means that it will easily stretch and be difficult to piece.

Elizabeth DeCroos
designer, teacher, speaker
Elizabeth enjoys doing all types of sewing and needlework and teaching others new techniques. For more information or to have her speak to your group click HERE.