This is what I do.. just give an insight.. I take a deep well socket... that is taller then the magnetron... and I would use the sparkplug version.. and slip it over the magnetron.. and place the item into the vice like You did.. and hit the socket several times and it come off nicely.. and if you're really careful.. as the magnetron does have copper in the center.. I use a grinder wheel.. and lightly grind the edge where the copper the center piece meet the edge of the solder metal plate and then.. lightly small screwdriver,, tap it.. until it comes off.. go in a circular motion.. and then bag the magnetron in store in a coffee can with lid.



while Grinding.. Please wear goggles.. and also wear a mask or a aspiratior breathing mask..