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Island Chain - 2 - Combination Square Triangles

Posted by Wanda Milankov on

This session you will be making 144 combination-square-triangles.

You will need:

              - the pattern: Island Chain by Eye Candy Quilts (available online HERE)

              - cut fabrics A, B & C

              - a rotary cutter with a sharp blade

              - cutting mat

              - a ruler

              - pins

              - pencil or fabric marking pen

              - optional: Tucker Trimmer by Studio 180 Design® (available online HERE)

              - optional: rotating cutting mat

The instructions for the combination-square-triangles can be found at the bottom of page 2 of your pattern. There are basically 11 construction steps.

1. Draw a diagonal line on the wrong side of a B square. 

2. Position an A square right sides together with the above B.

3. Sew a scant ¼” on each side of the drawn line.

4. Slice the unit in half on the drawn line. You now have 2 half-square-triangles.
5. Press the seam allowance to the dark side. There are 3 general rules about pressing when making a block. 1 - Press...Do not iron! 2 - Press to the dark side. 3 - Or, press to the less busy side... meaning the side that has the least seams. After pressing, DO NOT TRIM the squares.
6. Draw a diagonal line on the wrong side of a C square.
7. Position the C square right sides together with one half-square-triangle being sure the drawn line is perpendicular to the seam line.
8. Sew a scant ¼” on each side of the drawn line. Slice.
9. Press to the less busy side. In this case, towards C. You now have 2 combination-square-triangles. My picture shows 4.
10. Square the combination-square-triangle to 3½”. When using a Tucker Trimmer, position the half-moon symbol at the top right and line up the 45° line on the seam line. Also, position the perpendicular 3½” dashed line on the other seam. This will ensure that the intersection of seams will be centered.
11. Repeat steps #7 to #10 with the other Half-square-triangle. There will be a total of 4 combination-square-triangles.

 

Using the remaining A and B squares, make a total of 144 combination-square-triangles.

Pin the similar fabric groups together.

 

When using a Tucker Trimmer, position the half-moon symbol at the top right and line up the 45° line on the seam line. Also, position the perpendicular 3½” dashed line on the other seam. This will ensure that the intersection of seams will be centered.

 

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