My homemade bending iron :
A chromed table leg pressed oval.
An halogen bulb inside, with its dimmer.
A smaller tube on top for tighter radii.
A removable temperature sensor for ovens.
Note the wooden basement box, with the holes for the clamps.
Notice also the tile piece between wood and metal for insulation.
Works like a charm.
Note that I plug it in the wall through a differential circuit breaker.
I never like playing with water and electricity ....