PDF Library

The Mit Guide to Lock Picking
An excellent guide discussing pin tumbler picking.This also explains various security pins as well as a good explanation of the technique of scrubbing.

Bumping Locks
Helpful guide for bumping locks.  Discussing the theory and techniques behind this method.

The Impressioning Manual For Amateur Locksmiths
Providing a very good overview of impressioning locks.

Impressioning Guide
A one page information sheet giving some excellent information on how locks are impressioned.

Improvised Lock Picks
Some very good information contained in this short 18 page guide.  As well as explaining the basics of how locks work and raking etc this also includes a discussion of the little known technique of rapping, the Sesame combination lock and also opening handcuffs.

The LSI Guide to Lock Picking
This is a visual guide with many helpful photographs throughout.  This includes some excellent photographs of the insides of pin tumbler locks.  Also included is a very useful section on making your own lock picks.

Safecracking
Discusses safe and vault construction including some very good photographs explaining the inner workings of safe locks.  The guide also discusses a number of entry methods including drilling as well as manipulation.

Secrets of Lock Picking
Another guide that offers explanations of how locks work but also discusses magnetic locks.