Exotermic welding or CAD welding (CAD WELD) is a special type of welding that is used to create a connection between several copper pieces or to connect copper pieces with other metals. It is one of the most important types of welding used in the earthing system.
By clicking on the photo on the top, you can see the instructions for wire to rail CAD welding.
STEPS TO PREPARE THE MOULD IN THE BOX
You can see how to prepare the mould on the box by clicking on the photo.