Hi Wagner, > What is the most positive way to block magnetic field using a 5mm *any > material* board? > Take a look at the picture and tell me why it doesn't work. > http://www.ustr.net/jpg/moto1.jpg This is not quite on the OT but pretty close--- latest in EMF shielding devices http://host.berk.com/~lessemf/personal.html http://www.ghosthunter.org/toolbox/EMF/evm.htm#links for supernatural phenom http://www.futurehorizons.net/energy/detect.htm for UFO detection please dont ask why i was nosing around these places..\ alice