12' is a decent sized dish. Be sure to check the different pieces with a magnet to see if there is any non-ferrous metal. On a dish that size there might also be a motor and also some wire that probably has a single strand of copper wire in the centre of it. Take your time, learn as you go along and stay safe when working at height.



Then come back and post some pictures, because we all love to see people's projects and how they progress with them.