- Pins bind one at a time because chambers are not drilled identically. That is what makes picking possible.
- Most failed picking is caused by too much tension.
- A plug that over rotates then jams solid is a spool driver false set. Reduce tension.
- Recognize high security faces on sight and change method rather than persisting.
Why binding order exists
Apply light rotational tension to a plug and it turns a fraction of a degree until one driver pin catches on the edge of its chamber. That pin is now binding and the others are still loose. Lift the binding pin to the shear line and it sets on the plug's ledge, the plug rotates another fraction, and a different pin becomes the binding one.
Work through them and the plug turns. The order is determined by how the chambers were drilled, not by their position, which is why binding order is different in every lock and cannot be memorized.
Tension is the whole skill. Too much and pins bind so hard they will not lift. Too little and set pins fall back. Most people who cannot pick are applying far more tension than they think. Practice with a clear cutaway cylinder until you can feel a pin set rather than guess.
Single pin picking and raking
Single pin picking addresses each pin deliberately with a hook. It is slower, quieter, works on high security cylinders and teaches you what a lock is doing. It is the technique to learn first even though it is not the one you will use most.
Raking scrubs a serrated or wave pick rapidly across all pins under light tension, hoping several set at once. On a worn residential Kwikset it opens the lock in seconds. On anything with security pins it usually just makes noise.
Carry both and start with a rake on low grade hardware to save time, then switch to single pin work the moment the rake stops producing progress. Repeating a failed technique for ten minutes in front of a customer is worse than switching to a drill at minute three.
Security pins and what they feel like
Spool, mushroom and serrated drivers are shaped to defeat picking. When a spool driver reaches the shear line its waist lets the plug over rotate slightly, and that false set feels like the lock has turned but stopped. The tell is a plug that rotates further than normal and then jams solid.
The response is counterintuitive. Reduce tension slightly and the spool pushes the plug back, letting you feel which pin is oversetting. Fix that pin and continue. Fighting a false set with more tension guarantees failure.
High security cylinders add sidebars, interactive elements and rotating pin tips, and some of them are not reasonably pickable in the field at all. Recognizing a Medeco, Mul T Lock or Abloy face and reaching for a different method immediately is professional judgment, not defeat.
Common Questions
How long should picking a normal house lock take?
Often a few minutes on a standard residential cylinder. A high-security cylinder can take far longer or prove not worth the attempt, at which point the job becomes a bypass or a drill.
Does picking damage the lock?
Properly done, no. The lock works afterwards exactly as before, which is the main reason it is tried before anything else.
Why do locksmiths ask for proof before opening a door?
Because the job is opening somebody's home. Photo identification against an address, a lease or a utility bill is normal and any locksmith who does not ask is the wrong one to call.
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