Hi, if you don't get your fabric on the straight of grain you will wind up with the v in the fold area.
Originally Posted by
BellaBoo
If I don't get the bottom of the fabric exactly straight on a line on the mat I get the V in the middle of my strips. It's hard to get it exactly straight all the way across. I have to use a second ruler to align the fabric. That is the only con I have for mine.