You should never run a table saw without wearing eye protection, but it’s even more critical to protect your eyes when you weld. The light from a welding arc is so intense it can quickly cause severe eye damage. But that’s only one reason you must wear a welding helmet. Its other purpose is to protect your face from molten metal spatter and from the intense ultraviolet light generated by the arc. (Note that the lenses for arc-welding helmets are darker than those used for oxy/acetylene welding goggles.)
One of the best new products for welding is the auto-darkening welding helmet. Standard welding lenses make it almost impossible to see the work until you strike an arc. The lens in one of these new helmets allows you to see clearly under normal room light, but once you strike an arc, the lens instantly darkens to protect your eyes. Manufacturers such as Campbell Hausfeld, Hobart and Lincoln Electric have recently introduced helmets for DIYers for less than $200. If this sounds expensive, consider what your eyes are worth. Electrocution is a very real hazard with any arc welder if you fail to take adequate precautions. Read the instruction manual carefully and follow the manufacturer’s instructions to the letter. It’s also important to consider what you’re wearing.
The right clothing will protect you and the wrong clothing can be hazardous. Wear only longsleeve cotton shirts; synthetic fabrics can melt to your skin if they come in contact with molten metal. Dark colors will absorb UV light, while light colors can reflect UV light toward unprotected skin. Always wear welding gloves and insulated shoes; they’ll protect you against burns and electrocution. If you’re welding overhead, wear a cotton cap. Other important rules to remember: Always weld on noncombustible surfaces; never weld in a wet area; work in a well-ventilated area far away from flammable and explosive materials; and keep an ABC fire extinguisher nearby.