I recently got a MIG welder and I've been doing some body work on my pickup. Since my welding still stinks, much grinding is involved. I always wear those high school chemistry looking goggles when grinding, and a full face welding mask when welding, but every day I seem to have more pits and burned spots on my eyeglasses. Last night I got a pretty huge burned spot. So... is this normal or something? Glasses are kind of expensive. I'm not too stressed right now since I need to replace these anyway, but I don't want this to continue. I'm not sure if grinding bits are getting around the goggles, or if it's mostly sparks from welding coming in from behind when I'm looking down welding. If it's the first thing, maybe I need better goggles or something? I'm not sure what to do about the second option... maybe glass lenses instead of plastic? Thoughts?