How to remove threaded rod

Video in which I teach three ways to extract the threaded rod
History:
How to remove threaded rod
Apply Penetrating oil to facilitate extraction
1- Make counter nut
2- special tools: cobra pliers, pressure pliers and stillson wrench
3 - weld a nut to the threaded rod
Welding a larger nut we will apply more force with the wrench
If you have not yet been able to remove the threaded rod ...
En mi canal encontraras el tutorial "seven ways to remove a broken screw"