“Half-square triangles” are a standard small unit which occurs frequently in patchwork.
Instead of cutting out two triangles, it is quicker and more accurate to make two at a time from squares, using a “quick-piecing” technique. Look at the video below to see how this is done.
Many different blocks can be made either just using these useful little units, or by combining them with squares:
Why not try this technique out by making a Double Cat block – click here for a free download pattern
There are plenty of projects which include half-square triangles.
Calculating sizes for your own projects
It is easy to calculate the size of squares that you need to cut.
Simply add 7/8″ to the finished size required. This works with all sizes!
e.g. to make two half square triangles that will make a four inch unit when stitched into a block, cut a square of each colour which measures 4 7/8″, and quick-piece as shown in the video.
Half square triangle units are also useful for pieced borders, either on a single block like this, or around a quilt or wallhanging:
If you would like to try making a small project which includes a pieced border, the download pattern for the Catherine Wheel project shown here is available in my Shop for £8.
Full instructions for making the pieced border fit perfectly are included.
On a larger scale, half square triangles are also used for the inner border of this Solitaire bed quilt:
For other tips and guidance, look at the Machine-stitched patchwork page
Choose a project from my Shop – all patterns can be downloaded at a cost of £8, and include plenty of details to help you get really good results.