Building Blocks: Half-Square Triangles

The half-square triangle is a versatile quilt block that every quilter should master. In this hands-on class, we will make half-square triangles using 3 different methods. Along the way, you’ll understand the pros and cons of each method, troubleshoot common piecing issues, and learn math to customize half-square triangles to any size.

Half-Square Triangle Methods:
   Two-At-A-Time Method
   Four-At-A-Time Method
   Eight-At-A-Time Method

Please Bring the following supplies:

• Sewing machine, in good working order
• 1⁄4” presser foot, if available
• Thread for piecing, neutral color
• Small cutting mat, minimum 8” on each side
• Rotary cutter, with a fresh blade
• Acrylic ruler (6” x 6”, 6” x 12”, and 6” x 24”)
• Any specialty ruler you like to use for trimming half-square triangle units (optional)
• Sewing basics – pins, scissors, seam ripper, extra needles, etc.

You will need 1/2 Yard each of two contrasting fabrics or a combination of fabrics in the measurements below for scrappy half-square triangles. Cut fabric prior to class in the following sizes:

2 At-A-Time
(Qty 4) 5 ¼” x 5 ¼” square color 1
(Qty 4) 5 ¼” x 5 ¼” square color 2

4 At-A-Time
(Qty 2) 7 ¼” x 7 ¼” square color 1
(Qty 2) 7 ¼” x 7 ¼” square color 2

8 At-A-Time
(Qty 2) 10 ½” x 10 ½” square color 1
(Qty 2) 10 ½” x 10 ½” square color 2

Keep your cut fabrics separated by groups for easy identification in class.

No pattern required. Additional instructions will be supplied in class.

Please click this link to refer to the pre-class preparation and cutting document.