Originally Posted by PaperPrincess
I'm HST challenged, so I always cut the squares way larger than needed, sew my seam(s), cut, press, then cut down to the finished size. Once you get the hang of paper piecing, though, the accuracy can't be beat!
That Missouri Quilt method results in four HST's with exposed bias on all four edges. :roll:
So it you didn't starch the fabric squares into oblivion before sewing and cutting, and weren't gentle in the way you handled them, they are going to stretch. And end up being different sizes. And/or not square.
I know it's all the rage to use that method (and others have no problem with it) but I wouldn't bother. Not worth it. You save some time sewing but pay for it when trying to use them.
Like Paper Princess, I always use the cut bigger and trim down to size method. Results in perfect HST's each time.
Paper piecing (Thangles or On-a-roll or freezer paper) are other options but you have the additional step of the foundation preparation and/or removal to deal with. But it's worth it if you're having a problem with any of the other methods.