Originally Posted by
Quilt30
Or, make your own pattern. Draw finished size of block, cut diagonal, add seam allowance to the 1/2 or triangle. And cut individual side triangles using the pattern.
There is no law that says one "has to" cut the setting triangles from a larger square.
If you are unsure of whether not you have enough fabric to accomplish what you want, you can draw the triangles on the back of the fabric and count them to see if you have enough.
If using the cut triangles from square method - I always add a bit and trim later. My units ALWAYS end up skimpy when I cut the "exact" square size.