Rusted nuts and bolts can definitely slow you down when you're fixing up something around the house, but this handy tool ...

It’s a 30 kVA induction heater built by [bwang] over on Instructables. It gets hot enough to melt and forge steel, iron, and aluminum. An induction heater operates by surrounding the object to ...

You say you’ve got no need for shrink-fitting tools? How about stuck bolts? Induction heaters work great there too.