Re: [sudo-discuss] air compressor and plasma cutter

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(a)labitat.dk> wrote: On Wed, Apr 27, 2016 at 1:44 AM, Jake <jake(a)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 _______________________________________________ sudo-discuss mailing list sudo-discuss(a)lists.sudoroom.org https://sudoroom.org/lists/listinfo/sudo-discuss