Originally Posted by
Neesie
Until recently, all of my piecing was done with C&C thread and 1/4" seams. Different weights of fabrics. No problems (other than human carelessness) with blocks matching (and being the right size) or points being where they should be. Consistency & proper cutting and pressing, is what really matters.
I still use C&C thread - and my blocks usually end up being quite close to the expected size.
I have some very old hand-pieced blocks - those seam allowances are less than 1/4 inch.
Perhaps one reason for narrow seam allowances on those - I think fabric was an expensive commodity for many people - and people used the absolute minimum seam width that would not pull apart. Perhaps approximately 1/4 inch was around that width.