When you own or ever are in the vicinity of a butterfly knife being used, you need to know the basic knife safety techniques to make sure you and the people around you don’t get hurt. To begin with, you never, ever want to cut or pull the blade against something in the direction of your body or hands (or anyone else’s). That way if the knife slips you do not accidentally cut your fingers or stab yourself.  Also, butterfly knives have handles that come up around the blade to safely keep it out of the way when not in use. These knives with have a latch or switch to lock the handles in place, and this must be used so that the knife is safely stored. This also serves as a deterrent to children who should not be allowed around the knives at all.