Quarter Square Triangles

Hourglass Unit

Find fabric requirements and cutting instructions to make Quarter Square Triangles (QST) – Hourglass Units two at a time. Start with 2 squares of fabric cut the same size. One background and one accent fabric. 

See how the hourglass unit is made using squares.

The results show fabric requirements for each fabric. You can choose to cut squares the exact size or cut them larger to trim later. I suggest you use a scant 1/4″ when piecing.

Quarter Square Triangle – Hourglass

(QST) Hourglass Unit



Cut exact size, no trimming:


Cut larger to trim: