Question: why do you use ½" seam allowances then? Why not just use ¼" to start? It would save fabric, save time and be more accurate to sew.
Hello Alison! The final seam allowances, once trimmed, end up being 1/4 and 1/8 of an inch. Working with a 1/4 inch seam allowance from the get go is fiddly. Working with an 1/8 would be miserable. The narrow seam allowance is more difficult to press too. It's easier and faster in the long run to use the wider seam allowance and grade it. Thanks for the question!