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When the energy transfers, the top pin moves up while the bottom pin slows down, and a gap is created between the two pins. If the shear line is within this gap as torque is applied, it may set. While pins are usually set by raising the cut from the plug to the shear line, they can also be picked by first oversetting the cut to within the shell and then lowering it to the shear line. While applying light to moderate torque, push and pull a gently rounded rake pick from front to back and back to front along the pin stacks. Once you've picked a cylinder, you should know in exactly what order the pins pick. Tubular locks suffer from the same manufacturing imperfections as other locks and so can be picked with essentially the same techniques. Finally, for a real challenge, try the Yale "Y1" keyway locks. Once you've mastered the AR1 keyway locks, repeat exercises 2 through 6 with the "Ilco SX" keyway locks. Picking locks with spool and mushroom pins takes practice, both to recognize them and to effectively neutralize them when they are encountered.

If you can pick all (or at least most) of the locks on this board, you are well prepared against the typical locks installed in residential and commercial buildings in the US. However, because they jam when false set, locks with serrated pins tend to impression very well (impressioning is a decoding technique that produces a working key based on marks left on a progressively cut key blank). As you progress, you should know the state of the lock at all times: which pins are set, which aren't, which one is binding. Note that while many locks pick predominantly back to front or front to back, there are exceptions, and you may find that the binding pin stack "jumps around" from the back to the front to the middle and so on. There are many different styles of raking, some of which entail the use of special rake picks specifically designed for a particular technique.

Raking, in contrast, is a class of picking techniques in which several pin stack may be set at the shear line simultaneously. The multiple peaks allow several, or even all, pin stacks to set simultaneously. Do not push up hard against the pins; use just enough pressure to cause the pin stacks to jump. When inserted quickly in and out of the keyway and rubbed along the bottoms of the pins, they tend to make each pin stack "jump" rapidly. The Peterson "Reach" deep curve pick works well for this keyway, pivoting from the bottom of the keyway at the front. It is as well he did. You may well have one of these locks on your house. The commercial lever lock mechanism dates back to the early 19th century Chubb lock (and, indeed, to well before). Become comfortable with this before you try picking this lock with torque or you could bend or break your picks. Again, What is billiards try to find and lift all the pins with the different hook picks without applying any torque.

Again, continue with the AR1 locks. Better quality locks are less forgiving of too much torque. As the peaks hit the pin stacks, energy is transferred from the bottom pins to the top pins, much like the action of the cue ball in billiards. Vary the amount of lifting between strokes but do not force the pins, lest you overset them. Rubbing exploits this by simulating several passes of pin-at-a-time picking in a few "strokes" across the pin stacks. Get in the habit of making a systematic "inventory" of the states of the pin stacks after you set each new pin. Using an inverted pick, raise all the pin stacks to their maximum height. System for Aiming With Sidespin (SAWS) is a full-length instructional video by Dr. Dave that covers a new system to compensate your aim for cue ball (CB) deflection and object ball (OB) throw when using sidespin. If the cue ball strikes a legal object ball and a non-legal object ball at approximately the same instant, and it cannot be determined which ball was hit first, it will be assumed that the legal target was struck first. In general, wafer lock picking employs the same techniques and tools as those used for pin tumbler locks.