[sudo-discuss] air compressor and plasma cutter

[Jake]

please see my last post about the ventilation plan.

as for eye protection, as long as people don't stare at the arc without 
eye protection it shouldn't be a problem.  That said, if people want to 
make a welding curtain like Crucible uses, it's not a terrible idea:

http://goffscurtainwalls.com/sites/default/files/styles/slideshow_display/public/ssimages/Weldscreen.JPG?itok=7_mJcT7d

by the way, here's a picture of the plasma cutter:

http://i.imgur.com/Y31qhDs.jpg

On Wed, 27 Apr 2016, Patrik D'haeseleer wrote:

> We should definitely disallow cutting of any stainless steel, which causes dangerous hexavalent chromium dust. For those of you with the blank stares, hex chromium is the
> pollutant linked to dozens of cancer cases in the Erin Brokovich movie, a dramatized account of an infamous case where PG&E wound up paying out a third of a billion dollars
> in damages.
> 
> We should probably ban any galvanized metals as well. Zinc fumes are nasty. Nickel in stainless steel is a concern as well. So is the cadmium and manganese in some grades of
> steel.
> 
> The upshot is that we probably shouldn't be doing any plasma cutting without some serious ventilation. And eye protection of course - a welding curtain or screen might be
> good to have.
> 
> Patrik
> 
> PS: We've been discussing the possibility of doing water testing for metal contaminants in CCL. But having a plasma cutter spewing metal oxides into the air on the other
> side of the room may very well make that impossible...
> 
> On Wed, Apr 27, 2016 at 2:26 AM, Marc Juul <juul at labitat.dk> wrote:
> 
>
>       On Wed, Apr 27, 2016 at 1:44 AM, Jake <jake at spaz.org> wrote:
>             BUMP
>
>             we got the plasma cutter working!  But the air compressor is still messed up.  We took it apart three times trying to fix the check valve, but it
>             simply didn't work.
> 
> 
> I love plasma cutters but how are we going to safely use one indoors? I'm not sure anyone wants to breathe clouds of metal oxides:
> 
>   http://www.hgcodedwelding.com/hg-coded-welding-blogs/plasma-cutting-danger
> 
> --
> marc/juul
> 
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