[TheForge] FW: Didymium? I say "no way."

[Jerry Frost]

Seems like understanding the hazards their mechanics and good work habits 
will go a long way. No surprise eh? Still, having effective safety gear is a 
must. You're better off without gear than with ineffective gear.

It's a worthy project Mike thanks.

Frsty
-------------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.

http://www.artmetalradio.com/

From: "Mike Porter" <michael.a.porter at comcast.net>

> Hi Jerry,
> My personal interest is in enhancing vision through color manipulation, 
> but that cannot be separated from safety issues because it multiplies 
> them, just as magnification would. The more light your eyes receive, from 
> magnification, or from manipulating light bands for increased visual 
> impact along with increased comfort, the more IR they will receive when 
> viewing heated surfaces and flames, unless you filter it carefully. What 
> I'm recommending is a system for better control over your view of hot 
> work.
>
> ANSI Z87.1-2003 allows you to do just that for "special purpose" light 
> filters. It also leaves you pretty much on your own for protection from 
> radiant hazards. So, how could I recommend that people assemble such 
> filters without also showing them where to find the safety they take for 
> granted with ANSI rated general purpose filters? That's why I'm harping on 
> about safety issues from the very first. Not because IR is a terrible 
> bogyman, but because when we start manipulating the views from hot work, 
> we can accidentally make it into one. For instance, a dichroic notch 
> filter in the green band provides a very relaxed view. You could look at a 
> light bulb and think it wasn't all that bright this way, just as though 
> you were using say a number four or five ANSI rated filter, but you'd be 
> getting a big hit of IR, without your eyes reacting to the customary 
> brightness of an incandescent bulb. Is running a torch without IR 
> protection likely to hurt anyone? Probably not in the short run, but if 
> they keep on doing so long enough it certainly will.
> Mike P.
>