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

[Justin Fellenz]

Yeah, Frosty, you comin' down to the big shindig?

J

--- Mike Porter <michael.a.porter at comcast.net> wrote:

> Frosty,
> Will I be seeing you at ABANA 2006? I've been invited to demo the Gas
> Burner 
> equipment, and thought to bring some vision stuff along.
> Mike P.
> ----- Original Message ----- 
> From: "Jerry Frost" <frosty at customcpu.com>
> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> Sent: Friday, February 10, 2006 1:47 PM
> Subject: Re: [TheForge] FW: Didymium? I say "no way."
> 
> 
> > 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.
> >>
> >
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