by raimundo » 12 Jun 2006 9:35
many double side locks are wafer locks so no top pins, just wafers that are capable of sticking out of the plug on either side of it. if you have a split tensor you can work first one side then the other, or if you only have a single blade tensor, you put that in one side and work the other side once, then put in another tensor and remove the first one without letting off tension and work the side blocked by the first tensor. Often it is not necessary to 'set' the tumbler, just a diamond pick rakes one side, then the other, without removing tension. thus, you pull the wafers into the core, and if they stick out the other side, that gets adjusted when you work the other side. You can also make your own split tensor out of street sweeper bristle, just bend it in half, twist the tips to go into the lock and cut a pick tip on them. Usually best to have the tips not directly opposite, but staggered.
