I was changing the blades of my mower last night when the wrench slipped off the bolt causing my left hand to slide directly into a newly sharpened blade. Missed my wrist by about 1/4 of an inch. 3 hours in the ER and 18 stitches later I now remember why I bought that supply of gloves. I guess sometimes we get a little complacent when doing our daily maintenance. Stop, think and be careful.