Learn How to Weld

See how to set up a welding shop in your home and begin working with metal.

This shows beads formed on amperage settings ranging from too low (cold) to too high (hot) should help, but here are some other things to look for: Slag pockets: black, nonmetallic deposits in the weld. Try keeping the electrode movement steady . . . and hold the rod at an angle closer to perpendicular. Undercutting: a shallow groove along one or both sides of a weld. This usually results from moving the electrode too fast. Slow down a little. Spatter: droplets of metal around the weld. It isn't a serious problem, but-if adjusting amperage doesn't cure it-you may be holding the electrode too high.