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

[Martin Bogomolni]

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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>