Lock pickingI recently got back into the practice of lock picking. It is a great hobby, and it is remarkable how little high school teachers care when a student practices picking locks during class. They (the teachers) react more seriously to students using smartphones. I find this surprising considering that most of the uses for lock picking lead to criminal activity. I have also made a few simple sets for friends. these are made by taking bristles of street-sweeper brushes (approximately 2.5 mm x .75 mm, varying length) and filing some of them down (to make the picks) and bending others to a roughly 90° angle (for the tension wrench).