The primary concern is blocking ultra-violet light from the welding arc. Just as it gives your skin sunburn, it can do a number on the cornea of your eye. Glass does an excellent job of blocking UV light.
About 20 years ago, a friend of mine and I went in on a decent small wire welder setup. The first time I worked with it, I did not have a fire-proof work surface so I used the garage floor. Squatted down and welded away for the better part of the afternoon. Wore long-sleeve sweatshirts, jeans, gloves, helmet, etc... I forgot my feet. I wore sandals and socks and woke up the next morning with very sunburned feet. Hurt to walk for a few days - the skin blistered.
Leave a comment