I don't have one of my own but i've used them. As I understand it, most
autodarkening hoods will not activate at the relatively low light level put
out by oxy flames.

StaticsJason

"Eric R Snow" wrote in message
...
The title says it all. Looking at auto darkening hoods and they say
not for gas welding. The off shade is 3 or 4. Is this just too light?
I thought that the light blocked by auto darkening hoods that did the
damage was the same produced by an oxy-acetylene flame. The hoods
block both UV and IR.
ERS