I use blades waaaayy tooooo long, I know. I was mad about dropping a new one so it skips a few threads every 5". :? I never realize how dull one is until I buy a new and it truly feels like cutting butter. I don't change until it's skipping. But this last one never skipped, but man do I have to push to get it to work well. :roll: Joanne's was out of single packages, so I went for the 5 pack--then I knew I'd win the 30 more for sure. :lol:
I used the same seam ripper for 15 years before reading on here they go dull. :shock: