Clean Metal Before Welding

What happens here

The video begins by emphasizing the crucial first step before welding: ensuring the material is thoroughly clean. The presenter highlights the need to "get rid of all the mill scale," which he identifies as the "dark color stuff" on the metal surface. He demonstrates by handling metal pieces, implying that this dark layer must be removed for a proper weld. While specific cleaning tools are not explicitly shown in action, the instruction implies the use of abrasive tools like a wire brush or grinder to achieve a clean surface.

Goal: Remove mill scale and contaminants from metal surfaces.