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alright, glassies www.oberoncompany.com/OBE...aPage.html

i'm not sure what that'll tell you, but that's oberon's info page.

the gold shield doesn't block nearly as much IR as a welder's shade 2 (based on info from aura's web site, where IR transmittance is said to be "up to 25%" for the shield, whereas it is at a welder's shade 2 has an average of 5%. I do suggest reading these couple paragraphs very carefully.. "up to" and "average" can be very loaded describers.)

personally i'd rather have IR REFLECTED on my eyewear than absorbed so the glasses wouldn't get so hot.. but mike doesn't like that idea (if i remember the email correctly) it's not like this would be any darker than a shade 7.

i'm pretty sure "reflecting" and "blocking" can be used interchangably in this situation. "reflecting" light from hitting you is "blocking" it from hitting you.. eh?
the matter at hand are the percentages being blocked, as well as what is being blocked.

by the way, i had a welder's shade 5 plastic face shield.. it melted pretty badly. maybe they make them out of a different material for high temp work.. but.. i still swear by the gold face shield in front of my 286's shade 4.

the glasses block UV from hitting my eyes. the glasses block the sodium flare from interfering with me seeing my work. the glasses transmit less than 2.5% of the IR. the glasses also reduce the visible light to the vicinity of 12%... white hot boro is brighter than i want to be looking at through even "shade 4" (i know.. they're not really shade 4)
by putting a face shield on, i protect my face against UV and IR. i protect my face and glasses from impact. i further reduce the light, UV, and IR getting to my eyes.


if this is a bad setup, mike, please explain why.. because i surely am at a loss as to why it would be.



keep on thinkin, yall!
z--seth