Half Square Triangles {Quick Easy Method}

Instructions

1. Use this diagram to draft out your half-square triangle pattern.
   - a = finished block dimension, for example, if your desired block dimension is 2″, then the square on the drawing is 2 7/8″. 1/4″ seam allowance included.
   - Blue are sewing lines (1/4″ away from the red cutting lines).
   - Red are cutting lines.
   
   Each a + 7/8 square will give you 2 half-square triangle blocks, do some maths by multiplying the dimension with the number of blocks you need to get the actual fabric size required.
   
   The initial width (and length) of each fabric = (a+7/8) x number of HST required /2
   
   
   
   
2. a. Stack fabrics A & B together with right side together.
   b. Draw the pattern on the wrong side of the lighter color fabric.
   
   
   
   
3. Sew on the sewing lines (highlighted in orange color).
   
   
   
   
4. Cut along the cutting lines with a roller cutter and ruler on a cutting mat underneath.
   Each piece has 2 layers of fabrics, for this case, white at the top and red at the bottom.
   
   
   
   
5. I like to cut them into squares, then split them in the middle to get the triangles.
   
   
   
   
6. a. Open up the triangles and press the seam with a warm iron.
   b. Press seam allowance to the darker side of the fabric.
   c. Trim off the dog ears. Some people may find it monotonous to trim this, but since you already save up your time on this quick method, you will be fine to complete this final step.
   
   
   
   
7. One of the many perfect half-square triangles I have made from this quick and easy method.
   ~~ Happy ~~
   Stay tuned for the next tutorial on a tree quilt block and pinwheel quilt block which I have made from these half-square triangles.