I have a bipod spring that is too weak to keep the bipod legs open.
I've read that you can heat treat the metal to return its spring properties, but I'm not sure how to proceed. Does anyone know how to re-temper a spring? I searched "temper coil spring" and found a reprint of a really old book online that talks about dunking the spring in mercury, wax, and all sorts of other old-time solutions, but it doesn't really spell it out in a way I can understand.
I'm thinking I can heat it with a propane torch to a certain redness then quench in either oil or salt water to obtain a temper?