Quote:
Originally Posted by aston@ultrasw.c
A friend of mine used a cheap (HF) auto-darkening hood for a fairly intensive day of welding.
Next day he had spots in his vision and discomfort.
What he learned was that cheap hoods do not respond quick enough and allow a few milliseconds of UV exposure before going full dark.
The hood went straight in the trash and (happily) his vision recovered.
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For repetitive all day welding do not use an auto helmet. They do not switch fast enough. They were mot allowed at the weld shop where I used to work...