There are two main types of welding hoods, the stationary filter lens welding hood and the flip-front filter lens welding hood.
The stationary filter lens welding helmet has a fixed lens housing with the shaded lens held in by a spring retainer from where a lens can be slipped out and replaced as welding requires. It is important to change a welding hood lens when it becomes scratched or dirty in order to prevent the wearer from accidents such as tripping and falling.
The flip-front filter lens welding hood has a lens housing with a front side that can be flipped up so that it leaves a clear-glass lens that permits the hood to be worn while chipping.
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