Re: safety - pcb dust hazard

Dave,

I meant it all in fun. I have pretty much given up on worrying about
the catastrophy de jour. Life is way to short and should be enjoyed
rather than feared. So much of the stuff that is out there sucks the
sheer pleasure out of existance, and frankly I feel it makes no
difference in the long run except to make you fearful. Life is fuller
and lusher than that, it is meant to be enjoyed like a beautiful
woman, with all your senses alive and alert.

I was wrong about aluminum. The metal that is orders of magnitude
more plentiful on the surface of the earth is hydrogen, primarily
locked up in water and salts. Most probably people don't realize
hydrogen is a metal. Hydrogen embrittles steel. It forms a metal
alloy with it. Hydrogen takes the place of a metal ion in molecules
like hydrogen nitrate (nitric acid), hydrogen cloride (hydrochloric
acid), etc. Under sufficient pressure (enourmous by the way), it
reveals its true nature by becoming metallic in every sense of the
word. Interstingly Jupiter is metallic hydrogen for two thirds of its
radius according to the latest findings.

Mariss

--- In CAD_CAM_EDM_DRO@y..., "dave_ace_me" <davemucha@j...> wrote:
> Hi Mariss,
>
> I guess I did over state that a little. Steel is more common to us
> and is not found in nature.
>
> Aluminum, as a pure substance is not found in nature as it readily
> reacts with both bases and acids. Aluminum salts are pleantiful as
> you pointed out, and are in many of the things around us.
>
> Aluminum, that atom, Element 13, AL, has 3 electrons in the 3rd
ring
> which makes it so reactive, and why it is bound in nature.
>
> When we refine it and make pure Aluminum, the outter surface reacts
> quickly with oxygen forming a protective coating. when we cut it
or
> grind it, then inhale it, it reacts with our body chemistry. dry
> mouth is one sign of breathing alumunim dust or powder.
>
> Aluminum cooking utensils react with many foods and some of the
> resultant chemical compounds released are toxic. You can find this
> data easily on the web.
>
> Although not proven to the FDA's level of requirements, aluminum is
> considdered one of the major factors in Alzheimers, not that any of
> use would remember though.
>
> As a general guideline, don't breath insdustrial fumes regarless of
> the quantity. Solder off gasses lead and although the effects may
> not be seen by you in your life, others with lesser active brain
> cells may notice the effects more quickly.
>
> In my experiance, I get really dry and cracked skin when washing my
> hands is any good soap that cuts oils and removes dirt.
>
> Live in a bubble ? no
> open a window when convienient ? certanly. but I think most of us
> take some measures when the stuff we work on stinks, is dusty or in
> some way annoys us.
>
> My earlier post was to illistrate how easy and innexpensive it is
to
> add those particulate/odor/dust and chip removal devices in a
shop.
> I was amazed at how elaborate people get when venting plasma
cutting
> machines. some of those guys spend real money!
>
> and just because someone is paranoid, doesn't mean someone isn't
out
> to get them !
>
>
> Dave
>
>
>
>
> --- In CAD_CAM_EDM_DRO@y..., "mariss92705" <mariss92705@y...> wrote:
> > Dave,
> >
> > Actually aluminum is the most common metal available on the
surface
> > of the earth. If I'm not mistaken, all clay is composed of
aluminum
> > salts and oxides, as are most soils and rocks.
> >
> > Mariss
> >
> > --- In CAD_CAM_EDM_DRO@y..., "dave_ace_me" <davemucha@j...> wrote:
> > > Hi Andrew,
> > >
> > >(snip)
> > >
> > > Seems aluminum is the ONLY common metal NOT common in nature.
> your
> > > body uses iron, boron, zinc, copper.. you name it. but not
> aluminum.
> > >
> > > Dave