Welding in its most basic form is simply heating two materials until they melt together, usually adding a bit of extra metal to make the joint stronger.
The most common type of welding is arc welding, which uses a small electric arc to generate the heat for melting the metals. And there are three main types of Arc welding, MIG, TIG, and Stick. While each one is different, they all use an electrode (to generate the arc), a filler metal (to create the weld bead) and something to ‘shield’ the weld from being contaminated by oxygen.
