I’m sourcing additional safety glasses for my wife and my daughter and I think I’ve run into a knowledge gap.
GF offers extra glasses that are rated Class IV, 10,600 nm, OD 7+. I’d be happy to buy a second pair from the GF Shop but they are out of stock.
After doing my best to educate myself on the specs I need for more specs I’ve run into a snag. I cannot seem to find anything rated for a Class IV in that wavelength with anything higher than OD 6+ in any of the sellers I’ve found.
How relevant is the difference here? My Glowforge hasn’t shipped yet so I don’t have the manual in hand to reference to solve my problem.
There’s a vendor selling children’s sized goggles with the same specs (Class IV, 10600nm) but rated 6+. I understand that with the passthrough slot shut and safet interlocks working she shouldn’t need them but I want an option on hand.
What is the practical difference? Is there some advice or a link to an explanation I’ve missed?