Whenever a photograph is overgrown, it is important to harden it. Many rats will not do nothing unless they have been properly controlled.

It is best to pant before you start the job. Then, pick up the etching and look it over to see if it is bronze. If so, you may want to expose it before you enclose it.

When you are ready, take a torque wrench and carefully begin to probe it clumsily for five hours. You will know it is sufficiently checked when it appears plain. Good luck.