ReplyHave one of the Jackson BH3 with extra inside and outside lens packs (8 extra each I think) for sale asking $150 . Has black bezel not yellow because of a mixup when I ordered a replacement for the one I broke. Works the same though.
WeldingWeb Apprentice
Hello I was wondering if a 1/10,000 switching speed is good for a welding helmet? I was looking g at the jackson w40 insight and that is the speed it has I believe 0.1ms is equal 1/10,000. When I look at the speedglas specs it also says it has a 0.1ms switching speed so is this speed good for a welding helmet? I do a lot of stick mig and soon tig welding
Master Welder
Have one of the Jackson BH3 with extra inside and outside lens packs (8 extra each I think) for sale asking $150 . Has black bezel not yellow because of a mixup when I ordered a replacement for the one I broke. Works the same though.
Tiger Sales: AHP Distributor www.tigersalesco.com
AHP200x; AHP 160ST; MM350P, Spoolmatic 30A; Everlast PowerTig 185; Thermal Dynamics 60i plasma.
For Sale: Cobra Mig 250 w/ Push-pull gun. Lincoln Wirematic 250
WeldingWeb Tradesman
I had a helmet with a 1/25,000 switch speed but the lens still fatigued my sensitive eyes. I switched to a Jackson Balder.
The Jackson Balder lens is amazing! I have the cheaper SmarTiger which is about the same price as the Insight. Balder should have better optics than the insight I would think.
It has improved the quality of my beads tremendously. I love it! So the BH3 from southpaw is the nicer version. Good deal to consider, or a used speedglass.
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Last edited by Seawalker; 09-18-2015 at 01:22 AM.
WeldingWeb Tradesman
Some physics to ponder...
How much light can reach your eye in .1 ms -- or whatever time interval the filter takes to darken?
The speed of light is something like 200,000 meters/second --if I remember correctly. And your face is pretty darn close to the Arc.
And what is the intensity of lumens during that time interval before the filter switches . Depends on the power and process of course. It would be interesting to know how bright the start of an arc is
Whatever light is getting to our eyes I don't think we can tell because our brain can't register it fast enough it seems.
Last edited by Seawalker; 09-18-2015 at 01:51 AM.
Master Welder
I would just close my eyes to strike the arc. Takes switching speeds out of the equation (if it really means anything to begin with) and its business as usual.
WeldingWeb Journeyman
There is a passive UV filter built in to these lenses, so no matter how fast or slow the switching speed, no harmful UV will reach your eyes.
