When it comes to welding process, safety and avoiding the risk factors cause by the machine is the foremost of all.
Despite the fact that welding helmets are intended and made to save from harm the operator from the visible and invisible radiations like ultraviolet and infrared a welding arc gives off, not every helmet is made alike. There are a lot of options available for each and every king of welders. Foe example, there are passive or the so called auto-darkening lens, then the fixed or variable shaded one and with different viewing sizes. It is always advisable to spend some time in deciding and selecting the helmet which is best suitable forever ones requirements and should surely boost up the productivity and welding quality, over and above the comfort of the operator.
The point about tack welding process or other type of short welds is that it is difficult and inefficient so the operator always has to lift up the helmet to see if thing are fine with the work he has done. Moreover, malfunctioning of helmets to lock or even inappropriate moments also is likely to make operators exposed to arc flashes that will damages the eyes and naked skin. Never take chances while opting for a good helmet and the one that is suitable for you.