From wonderful WetCanvas:
Has anyone used the AGW-300 for furnace work? It seems like a good product from the specifications but I’m not sure how well I’d be able to see in the hot shop with 60% visible light transmission. A packet about eye protection that came with the intoductory materials for a course I took in Corning suggested wearing flip up #5 welding filters but it would be nice to not have to deal with the flipping. The AGW-300s are pretty expensive at $260 though so I’m not sure if it would be worth it even if I could see pretty well.
We really DON”T recommend the AGW-300 for furnace work because of the price point. The AGW-300 is really more designed for scientific glassworkers than for furnace workers, but it CAN be used without problem. Shade 5 welding filters are way too dark to safely use in a hot shop (furnace glass), and we don’t recommend them for that purpose.
The author then goes on to write:
I know there aren’t a ton of furnace workers on these forums but I think I can assume from the lack of response that not too many people have used these lenses. What do you use for eye protection? In my experience blowing and watching people in Corning, most of the artists just use clear safety glasses, or their own eyeglasses, nothing that blocks the IR. I don’t blow enough that I think it should be a problem but if I get more serious about it I would like to avoid cataracts later in life.
Even small amounts of IR exposure cause damage to the eye. Remember that eye damage from IR is cumulative, and that everyone has a different damage threshold, the point at which the damage done starts to affect your vision. I am surprised though that the Studio at Corning continues to allow unsafe eyewear to be used.
“Jill”, who appears to be a new member of WC, writes this:
Yea, I know what you mean about Corning’s CMOG Studio. I have used the same ones at a number of classes there.
I asked them about the protection of the clear safety glasses they use. Don’t be confused, and think they are regular safety glasses, because they are not. The ones they use are clear glasses which also have the 99.9% UV protection.
After being there, I looked around for this type and discovered that most of the safety glasses you find at Lowe’s or Wal-Mart are regular safety glasses without UV protection. I finally found some at a different Wal-Mart and the box said 99.9% UV protection. They were about $4.00 so I bought 3 pairs.
Now I only use my dark glasses for flamework. The clear ones with the 99.9% UV protection are a lot easier to work with in a hot shop.
ACK!!! UV is not equal to IR! As I’ve said many times before, UV is not generated by most glassworking operations, including the hot shop. You need to get in the 4,500 F degree range before you even start to generate any significant amounts of UV, and that simply does not occur in most glassworking studios, much less the hot shop.
In the memorial words of my father: ‘We give them the books, we send them to school, but they still don’t learn.”
A lot of the writing I do is trying to change misconsceptions and present hard solid facts. Unfortunately, it appears as if I’ve got a long road to go yet. I think of it as job security.