These are the screwdrivers everyone should know, plus when and how to use them. You’d be hard-pressed to find someone unfamiliar with a screwdriver. However, “screwdriver” colloquially ...

It is very hard to apply lots of torque to a slotted screw drive without camming it out or snapping the head off the screw. The screwdriver isn’t self-centering either, so applying force off ...