Notes on Picking Pin Tumbler Locks > 자유게시판

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For example, Mul-T-Lock cylinders use special "telescoping" pins that contain two independently keyed tumblers. Many of these mechanisms involve the use of a "sidebar" that must retract before the plug can rotate. Just use it to tack against the direction in which the Earth is travelling, gradually slowing its orbital velocity and increasing the orbit's eccentricity, until the orbit passes within the Roche limit where the Earth is torn apart by tidal forces. Note that the Earth does not and will not behave like a solid, rigid billiard ball under such huge impacts as these. See Figure 2. The plug will be blocked from rotating if any pin stack is lifted either not far enough (with the cut still in the plug below the shear line) or too far (with the cut pushed above the shear line and into the shell); to rotate, all pin stacks must have a cut at the shear line. The top pin of that pin stack will be trapped above the shear line, the bottom pin will fall freely, and now a new pin stack (the next most misaligned one) prevents further rotation. However, your efforts un-pinning and re-pinning locks will be time well spent -- you will progress much faster than you would if you tried to start out picking fully pinned cylinders.

In particular note that because the pins are slightly out of alignment, as the plug is turned gently, only the pin stack that is most out of alignment actually prevents further rotation. For most of the picking methods discussed here, in which tumblers are manipulated one by one, a "hook"-style pick is generally used. This pick is a Peterson "Hook" with a plastic handle. Three of the picks are of a "hook" design. Mechanical combination locks are common on inexpensive padlocks, safe locks, and to control access to high security vaults. Combination locks require the user to "dial in" a secret combination, analogous to a password. The proper pick and torque tool selection depend on the shape of the keyway, the features of the lock, the picking technique, and the individual preferences of the user. The shape of the tip is the most obvious difference between picking tools, with hooks, half-diamond, ball, double ball, wave, sawtooth and other styles available. The basic skills of pin tumbler lock picking include selecting the proper tools, manipulating pins through the keyway, applying torque, and recognizing the state of each pin. It's hard to learn these skills all at once on off-the-shelf commercial locks, but that's what many people who try to learn lock picking end up doing (before giving up in frustration).

The Y1 keyway is one of the toughest you are likely to encounter in real lock installations in the US. Here the plug has been turned slightly toward the camera, so that the tops of the pins in the plug are visible. Submissions can be mailed to Billiards Digest, 122 S. Michigan Ave. Suite 1506, Chicago IL 60603, or emailed to the editor by clicking here. Longer handles are as a rule better in torque tools; the farther from the plug the torque can be applied, the easier it is to detect and control fine movement. If the shear line is within this gap as torque is applied, it may set. When the pin stack truly sets at the shear line, it will feel like an ordinary set pin. Most of the esoteric pick designs in the huge, overpriced sets you see on the web and from locksmith suppliers are useless, and eventually end up being discarded in favor of the basic hooks. Electronic locks, of course, do not have mechanical tumblers and are so not vulnerable to many of the physical manipulations exploited in tradtional lock picking. The six character keying code gives the pinning from the front of the lock to the back, with a "-" for a missing pin stack and a digit for a pin that is installed.

Pool is a group of cue sports that are played with cue sticks but on a table with six pockets along the rails where balls are dropped. While the LAB picks are quite nice, their small size makes them rather delicate and easy to bend or break, especially as you're learning how much lifting force and torque are involved. The LAB picks can comfortably maneuver around even very tight keyways, and are among my personal favorites. Unfortunately, these designs are less than ideal, and many of the "standard" picks are too large to fit and move comfortably in common lock keyways. The selection of the torque tool is just as important as that of the pick, but, again, commercial pick kits often fail to include a sufficient range of sizes and designs to allow good control and feel across the range of common locks. The tool must have a good fit to be effective, however. Now release torque and start over, taking care to pick all the pin stacks with spool/mushroom pins while leaving at least one regular pin stack unset (this will require a light touch and good sensitivity). If you're not in my seminar, the references to the lock boards in the lab don't apply, of course; you will need to configure your own training locks to follow these exercises.

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