Induction heaters can make conductive objects incredibly hot by generating eddy currents within the metal. They’re used in a wide variety of industrial processes, from furnaces to welders and ...
You say you’ve got no need for shrink-fitting tools? How about stuck bolts? Induction heaters work great there too.
Google “induction heater tool” for photos and a better description of the various devices now on the market. They’re not cheap—from $200 to $500—but once you’ve got one it’s amazing ...