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What should to consider when choosing a welding helmet?
Some welding helmets with auto-darkening lenses automatically darken the lens to a #10 shade, which is a common shade for lenses with passive helmets. If you're mainly sticking to one type of welding, or if you keep the amperage consistent, this kind of helmet might be sufficient. But if you switch between MIG and TIG, for example, you may want to choose a variable shade helmet instead of a fixed shade one. These helmets have a range of shades, usually between #9 and #13. This allows you to still see what you're doing, even when the brightness of the welding arc changes.