I have found using the Aurifil 50 weight thread makes quite a difference to getting these lovely little squares accurate. With the fine thread you can get fine stitching in the seams that does not take up allot of room therefore making a 1/4 inch seam more achievable. I also use a Schmetz 60/8 sharp microtex needle with this thread making smaller holes and again less room in my seams. I use this thread for all of my piecing work and have found it to be absolutely brilliant.
Aurifil Thread is available on our website. www.pinevalley.co.nz/catalog/aurifil-100-cotton-mako-502-thread
Schmetz sewing machine needles are also available on our website. www.pinevalley.co.nz/catalog/schmetz-sewing-machine-needles
When making smaller blocks, I have found that smaller prints or tone on tone fabrics work famously. The black fabric in these pictures has maybe a larger print then I would normally use for this size but as it is the black that I want to focus on in my design I am happy with it.
I am making these into a table runner for our Pine Valley Quilts pattern line so keep watching as I will keep you updated with the progress.
For this one inch size 1/2 square triangle you need to cut squares 1 7/8 inches, then draw a diagonal line down the middle of the wrong side of the light square.
Place squares together with right sides facing, stitch a 1/4 inch seam on each side of the drawn line. Cut down the drawn line to give you two 1/2 square triangle units and press them open towards the light fabric.