My Mom also said that back in the old days they ripped the fabric. However, they gave you 4-6 inches OVER your measurement to account for the damaged edges since they have to be cut away. When I go on vacation and visit quilt shops, if they tear fabric, I don't buy any fabric. I've had fabric ruined because of pulled threads a full foot into the fabric pattern. Not worth my time. I have vision damage and can see the grain of the fabric on all but the darkest pieces.