We have an outdoor metal box that has about a half inch hole drilled through the top. One of our techs was installing a camera on top of the box, and did not realize the camera angle would not work. The box contains a push button that calls the house. There are some electronics inside. I'm trying to come up with a way to fill the hole. I'm thinking using gorilla tape on the inside of the box to form a base, and then filling the hole on top with something that will dry and harden that can be painted. I know it won't be totally perfect, but it should be waterproof and get the job done.

Does anyone have any ideas?

Thanks.