Help with rapping a Lockwood oval cylinder.
I have no key for this cylinder & would like to disassemble it.
Normally I would shim it, however in this case, the warding renders this almost impossible. The only other non destructive technique that comes to mind is rapping - something I have no experience with.
As I understand it, I need to remove the cam, apply gentle pressure to the back of the plug & then hit it, bible side facing downwards, against a solid surface, such as a block of wood. I have tried this & have not managed to set a single pin stack (I can't hear any snapping back down when I release pressure on the back of the plug.)
Am I doing this correctly & does anybody have any hints that might improve my chances?
Thanks,
...Mark