Originally Posted by quiltlady37
My printer was set at 100% and I was doing paper piecing and sewed right on the lines. I guess I should do a practice block with fabric that I don't care about. Thanks for the info.
I did a pp from there, printer was set at 100% as well, sewed on the lines and my block was 12.25 not 12.50. Quarter of an inch isn't much as a single block, but added in a whole quilt, it can make a difference.