Unlocking a bathroom door with a knife generally involves using a simple knife blade as a makeshift tool to manipulate the locking mechanism, rather than using force to pry or jimmy the door open [1]. The specific technique depends on the type of lock:
Take the butter knife, and slide it between the door and the door frame. Start about three inches at the top of the door knob. Slide the knife until you find the door's bolt. Push the knife in, working it until you slide the bolt out of the door jamb.
No Damage at All
Rule 2: Never pick a lock that is in use.
Common household items for lock picking include paperclips, bobby pins, and safety pins, which can be shaped into a tension wrench and pick. Aluminum can strips or small flathead screwdrivers may also work. In some cases, a plastic card can slip a spring latch.
The two biggest errors that people make when attempting to pick involve the use of too much force. Too much torsion pressure with the wrench will bind the pins too hard and make lifting the stacks difficult. Lifting the pins too high will raise the bottom pin up into the shear line and not allow the plug to rotate.
Rule 1: never pick a lock that you don't own or do not have permission to pick. Rule 2: do not pick locks that you rely on or that are in use. Rule 1 is pretty straightforward. It's your good old fashion, common sense, “stay-out-of-jail” rule.
A pick-proof lock has specialized keys and safety features that prevent lock picking and bumping. The best pick-resistant locks to buy are the Medeco3 Cam Lock, BiLock deadbolts, and the EVVA MCS locking system.
So, Can You Use WD40 For Door Locks? The short answer: no, you shouldn't use standard WD40 on locks. Many people try using WD40 on locks to loosen them when they get stuck, since it works as a lubricant for many things. But standard WD40 actually does the opposite.
Steps