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Techniques

Squaring Up

Trimming a pieced unit to its exact finished size using a ruler and rotary cutter.

Squaring up is the process of trimming a pieced unit — most commonly a half square triangle, flying geese unit, or finished block — to its exact required size. Using a quilting ruler and rotary cutter, the quilter trims away the excess fabric while keeping the design centered. Squaring up compensates for slight variations in cutting and sewing and ensures all units are identical before assembly. This step is particularly important for HSTs, where the bias seam can cause slight distortion. Consistent squaring up is the difference between blocks that fit together perfectly and blocks that don't.

Related Terms

Half Square Triangle (HST)A square unit made from two right triangles of different fabrics sewn together along the diagonal.Rotary CutterA circular blade tool that rolls across fabric to cut precise straight lines, like a pizza wheel for fabric.Quilting RulerA thick, clear acrylic ruler used with a rotary cutter to make precise cuts.

Practice makes perfect.

NiftyFifty connects quilters from all 50 states through block swaps, bees, and quilt-alongs. Great place to put new techniques to work.

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