Re: [CAD_CAM_EDM_DRO] Re: Waterjet - HomeBrew

rolandfriestad wrote:

>Large volume users do recycle the abrasive - Not practical for
>smaller users like me - If you cut steel and use it for concrete the
>result would soon be rust-colored after being rained on for a short
>time - Makes a pretty good yard pot-hole filler but you could run
>afoul of the environmental folks - I recently read of a case of a
>company being charged with "heavy metal" pollution but they were only
>cutting aluminum - Who knows how the folks at Uncle Sam make their
>decisions? - Seriously though, a lot of metals have components that
>would officially be considered dangerous pollutants if the abrasive
>were just discarded after use - One of my sons is a Chemistry
>Professor and Uncle Sam insists that Sodium Chloride in his lab be in
>special double walled protective containers so that pollution doesn't
>occur in case of a spill - I kid you not -
>

Yeah, I work in a Chemistry department, and they are always upping the
level of the environmental inspections. I got in trouble for having a
bottle
of TAP WATER that was not labeled! So, now, my bottle that I squirt on
my soldering sponge says "TAP WATER" on it. They haven't made my put the
4 colored diamonds hazard level label on it, yet. That, of course, would be
a 0 - 0 - 0 label for water.

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Jon