my blades last forever - one thing I do is make sure that I am using the "light" cutting "setting" with 1 or 2 layers of fabric and the "heavy" cutting "setting" for more than that. I also lock it when not in use to keep it from getting knicked. You could also try to take the blade out and clean out the handle area where the blade rests - sometimes it gets so full of fabric dust that the blade gets out of whack.
:) :wink: