Alright, there are lots of videos out there dealing with Master combination locks, but this how-to video will show you how to open a Dudley combination lock. These locks are commonly used in schools, so you've likely seen one there. This method opens the lock permanently, meaning you won't be able to close it afterward. You'll need a flat head screwdriver and a little patience. The method involves prying off the style, allowing you to get to the insides of the lock. After that, you'll be pushing down on all the insides of the combo lock. Try it now and see if you can crack a Dudley lock!