Originally Posted by
nycquilter
I came here to offer the exact advice already offered. Cut the squares larger, sew, cut apart then square to the right size. It makes for much less room for error.
Ditto.....I just made a bunch of HST and used the exact method you want to do (make diagonal line, stitch both sides, cut middle) and they all came out great. I would cut them larger and trim to size unless you cut and sew exact....LOL. I know that sure isn't me.