capbox spring

[Bill]

I am preparing to cut out a capbox for a small percussion rifle. How should I attach a spring in order to keep the lid open/closed? I apologise if this is a rehash of another older topic. Many thanks for any information
BIll

[Swampwalker]

On ones I've done or examined, the spring mounts with a machine screw to the underside of the finial, and must be bent to bear correctly on the cam of the lid.

[D. Taylor Sapergia]

Bill there are many publications that illustrate this device, as well as full sized plans from sources such as Track of the Wolf.  The Purdy Rifle plan comes to mind.  Swampwalker has it right, but a picture would describe it better.  Investment....

[Bill]

Thank you! I will look at plans and now I remember packdog had a very good tutorial on the subject.
all the best
bill