Grind mode allows the helmet to be used as a protective shield by preventing the lens from darkening while grinding.

http://www.weldingtipsandtricks.com/miller-welding-helmet.html
Grind mode is shade 3. You cant use just any auto darkening helmet to grind. The sparks will be detected by the sensors and will make it go dark...if you have tried grinding with your auto darkening helmet you know how annoying this is.
Being able to grind without the sensors making the helmet go dark allows for this miller welding helmet to double as a grinding face shield. Lets be real...sometimes we are all tempted to grind with only safety glasses on...or worse, with no eye protection at all. Having a welding helmet that doubles as a grinding shield makes it convenient to be safe.. ..joe

Last edited by TooMany2count; 10/04/2014 4:54 AM.
~ Joe
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