Half Square Triangle Quilt Block Pattern

Instructions

1. On the back of your lighter squares, draw a line across the bias with a marking pen, like a chalk marker.

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2. Place your lighter square that has the mark on top of one of your darker squares with the right sides of the fabric facing each other.

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3. Take these two squares to your sewing machine and stitch a quarter inch allowance on both sides of the line down the center.

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4. Once you've got both of your seams, you can cut your triangles apart right down the line.

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5. Press your seams towards the darker triangle.

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6. Using a 6.5-inch square ruler, trim your squares to 6.5-inch squares. This is done for two reasons -- to adjust the squares for the proper seam allowance and to correct for your triangles getting out of square.

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7. Arrange your squares in the pattern of your choice. Then stitch the top two and bottom two squares together.

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8. Press your seams in the middle of your two rectangles in opposite directions so you can easily nest your seams.

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9. Finally, stitch the two pairs of squares together with a quarter-inch seam allowance to get your final block.
   
   This part is particularly tricky when stitching through the center because you have a bunch of seams meeting all in one place.

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10. Press your remaining seams in a pinwheel pattern.