Once the combination lock is entered, the safecracker must pull a function handle and move it so that the bolt is unclasped from the lock. This causes the safe to release the lock, allowing access to the interior of the safe. The safecracker then extracts the cash, checks, and documents from the safe. One alternative to this attack is the "shatter also" technique, where the safecracker drills an opening in a hardplate, just large enough to permit the cash and valuable papers to fall through. This attack can be difficult, however, as modern 3-dial safe locks are quite durable and will not easily shatter. Locksmiths can reduce the drilling time by using saws and special cutting tools. Nail guns (which deliver a large number of shots) are also used to crack hard plate and composite hardplate safes. In the case of a 3-dial safe, the safecracker can cut through the hard plate into the interior of the safe. This powerful attack requires a good set of power tools, as well as a great deal of practice. While safecrackers are more likely to use softdrill or other devices to access the cash, they can also perform the attack with less powerful tools if the safe is not equipped with a hard plate.
Natural techniques are used by rogue safecrackers to gain access to safes. For instance, using a hammer, sledgehammer, or other heavy object, a safecracker can repeatedly hit the dial and the dial fence and, eventually, cause the dial to move. The pause between each "hit" provides enough time for the safecracker to observe/record the position of the dial, and thus gain access to the safe.
Drilling through the hardened steel or composite hardplate of a safe is an extremely destructive, noisy and time consuming process. There are a few non-destructive attacks available to safecrackers, which provide somewhat less time to break into any safe but are equally effective in the vast number of safes targeted. Such attacks include the "hammer and chisel" technique, "firing the lock" technique, "shock breaking", and others. d2c66b5586