[Noisebridge-discuss] let's get a TIG welder

[jim]

    I've seen what an oxy-acetylene cutting torch can 
do: it's fearsome, as are the holes in the concrete 
floor. 



On Sat, 2012-08-18 at 12:22 -0500, Martin Bogomolni wrote:
> Oh Jim, for Pete's sake.
> 
> I have welded in a bone-dry 100+ year old wooden building in San
> Francisco, and that all wooden building .. with all wooden floors ..
> has sustained two auto hammers, a forge for iron and steel .. a big
> ass bellows forge filled with coal.. etc.
> 
> The fact is that wood -smolders- a lot faster than it just bursts into
> flame.  You just use common sense and have a bucket of water nearby,
> and take the usual precautions.
> 
> I'm not just tossing aside your concerns, but you do have to combine
> experience and common sense with the work, or you end up with alarmist
> statements like you just made.
> 
> That, and we'll likely be welding on my favorite kind of surface for
> the work -- a 1/2" thick steel plate.
> 
> -Martin
> 
> On Sat, Aug 18, 2012 at 10:18 AM, jim <jim at well.com> wrote:
> >
> >     This is a scary prospect. The building is wood, the
> > frame and floor are old and dry. hot metal drops hitting
> > the floor are on the order of three or four thousand
> > degrees Fahrenheit, much hotter than molten solder, and
> > take much longer to cool. Wood can ignite at many hundreds
> > of degrees.
> >     Seems to me a bad idea. If you do it, please be sure
> > that beneath the metal floor there are three inches of
> > concrete and maybe another metal plate beneath that.
> >     Also, be sure there's protection at least one foot
> > above the floor on the walls (metal over double gypsum
> > on metal studs).
> >
> >
> >
> >
> > On Sat, 2012-08-18 at 07:56 -0700, Mitch Altman wrote:
> >> Thanks, Martin!  I just learned to weld at ToorCamp.  It was way
> >> fantastic!  And I want more!  We leaned MIG, but were shown TIG.  TIG
> >> is clearly the way to go at Noisebridge.  Assuming there's still
> >> interest after Martin's class (which I signed up for!), let's set up a
> >> corner of the dirty shop, as Casey suggested -- with ventilation, and
> >> with that UV protective vinyl, as others have suggested.  And with
> >> some metal on the floor, since that is easy.  And some signs with
> >> basics (and asking people who don't know to Ask First).
> >>
> >> We may be able to get a decent used one (Miller, Lincoln, etc), rather
> >> than a Harbor Freight that we need to muck with to make decent.  Let's
> >> discuss after Martin's class.
> >>
> >> Cheers,
> >> Mitch.
> >>
> >>
> >>
> >> > From: martinbogo at gmail.com
> >> > Date: Fri, 17 Aug 2012 20:05:48 -0500
> >> > To: noisebridge-discuss at lists.noisebridge.net
> >> > Subject: Re: [Noisebridge-discuss] let's get a TIG welder
> >> >
> >> > Okay folks, here's a Google Form. If you're interested in the class,
> >> > please head to it and fill it out.
> >> >
> >> >
> >> https://docs.google.com/spreadsheet/viewform?formkey=dGprSVA3TzVsMW1Vc0t0dGotV3ZRdFE6MQ
> >> > _______________________________________________
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> >> > Noisebridge-discuss at lists.noisebridge.net
> >> > https://www.noisebridge.net/mailman/listinfo/noisebridge-discuss
> >>
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> >