PatrikSeems like for the CNC plasma cutters, a lot of people are really recommending a water table as being far more effective at eliminating the dust and smoke. See this thread, for example:Something to keep in mind...
http://www.pirate4x4.com/forum/torchmate-cnc-forum/1005868-health-concerns-regarding-plasma-dust.htmlOn Wed, Apr 27, 2016 at 1:16 PM, Jake <jake@spaz.org> wrote: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@labitat.dk> wrote:
On Wed, Apr 27, 2016 at 1:44 AM, Jake <jake@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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