I have just gotten into the habit of closing my blade when I set it down every time, ( I'm kind of proud of that...) I read an article on a retreat with Eleanor Burns, maybe three months ago... and it said something to the effect'... whether she's gliding through the class collecting quarters for blades left open...' I think about that every time I cut something now; who would've thought that would be the thing to make me be more careful?!