HSTs or Half Square Triangles are one of my favourite ever patchwork tools. They are so versatile and so many designs can be made with them. Endless possibilties 🙂
Again the hardest part is choosing the fabrics!
There are many ways of creating HSTs. I’m not advocating that the following is the best way it is what I prefer and what works best for me. To look at other ways I’ll pop some links later in the week over the Flickr group.
To start first work out the size of your finished square when sewn together. Add on an inch to cover seam allowances and start cutting your squares. What I’m making here each square finished will be 1.5″ so I’ve cut a load of 2.5″ squares.
But if you want your finished squares to be 5″ start with 6″ squares.
Place two squares RST (right sides together) lining up the edges. You are going to use the line you have drawn as a guide and start sewing a seam to one side that is an scant 1/4″ from the line. Make sure you sew as straight as you can.
If you are doing more than a few! To speed up the process and save thread you can do what is known as chain piecing. Basically once you have sewn the seam on your first square instead of cutting the thread, line up your second square and go! Between each square make sure your needle has finished its round though.
Now I forgot to take photos of the next process…. Cut along your drawn line to have two pieces. Using your iron set your seams and then press open the triangles to get one square block!
Trimming…. If you have a ruler with a 45 degree angle line align the line with the diagonal on your block and trim your HSTs. As I started with 2.5″ squares I want to trim these to 2″ exactly to ensure my sewn sections will be 1.5″.