I cut one of my older ones into smaller ones, after cutting it, there was 1 part where the numbers were off, I used a marker and just re-numbered...they are great when I am toting to my quilt guilds...I used a pair of older shears, and it didn't seem to hurt them...but I made sure the pair I used were old, I only use them for things that if they get messed up it is no great loss...