Building an effective Faraday Screen is surprisingly difficult: There are three completely different scenarios, blocking electrostatic fields, blocking RF ene

Building an effective Faraday Screen is surprisingly difficult: There are three completely different scenarios, blocking electrostatic fields, blocking RF energy, and blocking alternating magnetic fields. The first can be achieved by a thin conductive screen (eg brass mesh with soldered seams), the second by thick copper sheet (with bolted seams) and the third requires thick magnetic material (eg iron or nu-metal).