The Galaxy star quilt block is a real eyecatcher. It uses both half square triangles and half rectangle triangles to make a very striking block. I have made it here as an 18″ square using blue, yellow and orange fabrics.
Cutting requirements for the galaxy star quilt block
6.1/2″ squares: four blue
3.1/2″ squares: four blue, two yellow, two orange
3.7/8″ squares: two blue, one yellow, one orange
3.7/8″ by 6.7/8″ rectangles: four blue, two yellow, two orange
Making the galaxy star quilt block
Make half square triangles with the 3.7/8″ squares. Place a blue square with either a yellow or orange square, right sides together. Mark a line along the diagonal and sew a 1/4″ seam either side of this. Cut along the line to produce two half square triangles.
Make half rectangle triangles with the rectangles. You will only need to use the ones shown in the photo. The ones that are a mirror image of these cannot be used in this block. You will need four in blue/yellow and four in blue/orange.
You can find a full tutorial for making half rectangle triangles here.
Lay the patchwork out as shown. There’s a blue square in each corner and a four patch unit made with yellow and orange 3.1/2″ squares in the middle. On each side of the central square there is a half rectangle triangle together with a blue square and a half square triangle. I know it’s not totally clear in the photo, but the top right hand corner of the galaxy star quilt block is orange, to match the bottom left hand corner.
Begin by sewing the small blue squares to the half square triangles. This makes them the same size as the half rectangle triangles, so that they can be sewn to each other. Sew together the four squares in the middle to make a four patch unit.
You can now sew the squares together across three rows and then sew the rows to each other to complete the galaxy star quilt block. It’s a real stunner, isn’t it?
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