Maybe we'd have to make the welding equipment unavailable outside of class at least at the outset, until people are kind of certified Safe For Welding.<br><br><div class="gmail_quote">On Sat, Aug 18, 2012 at 10:22 AM, Martin Bogomolni <span dir="ltr"><<a href="mailto:martinbogo@gmail.com" target="_blank">martinbogo@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Oh Jim, for Pete's sake.<br>
<br>
I have welded in a bone-dry 100+ year old wooden building in San<br>
Francisco, and that all wooden building .. with all wooden floors ..<br>
has sustained two auto hammers, a forge for iron and steel .. a big<br>
ass bellows forge filled with coal.. etc.<br>
<br>
The fact is that wood -smolders- a lot faster than it just bursts into<br>
flame. You just use common sense and have a bucket of water nearby,<br>
and take the usual precautions.<br>
<br>
I'm not just tossing aside your concerns, but you do have to combine<br>
experience and common sense with the work, or you end up with alarmist<br>
statements like you just made.<br>
<br>
That, and we'll likely be welding on my favorite kind of surface for<br>
the work -- a 1/2" thick steel plate.<br>
<span class="HOEnZb"><font color="#888888"><br>
-Martin<br>
</font></span><div class="HOEnZb"><div class="h5"><br>
On Sat, Aug 18, 2012 at 10:18 AM, jim <<a href="mailto:jim@well.com">jim@well.com</a>> wrote:<br>
><br>
> This is a scary prospect. The building is wood, the<br>
> frame and floor are old and dry. hot metal drops hitting<br>
> the floor are on the order of three or four thousand<br>
> degrees Fahrenheit, much hotter than molten solder, and<br>
> take much longer to cool. Wood can ignite at many hundreds<br>
> of degrees.<br>
> Seems to me a bad idea. If you do it, please be sure<br>
> that beneath the metal floor there are three inches of<br>
> concrete and maybe another metal plate beneath that.<br>
> Also, be sure there's protection at least one foot<br>
> above the floor on the walls (metal over double gypsum<br>
> on metal studs).<br>
><br>
><br>
><br>
><br>
> On Sat, 2012-08-18 at 07:56 -0700, Mitch Altman wrote:<br>
>> Thanks, Martin! I just learned to weld at ToorCamp. It was way<br>
>> fantastic! And I want more! We leaned MIG, but were shown TIG. TIG<br>
>> is clearly the way to go at Noisebridge. Assuming there's still<br>
>> interest after Martin's class (which I signed up for!), let's set up a<br>
>> corner of the dirty shop, as Casey suggested -- with ventilation, and<br>
>> with that UV protective vinyl, as others have suggested. And with<br>
>> some metal on the floor, since that is easy. And some signs with<br>
>> basics (and asking people who don't know to Ask First).<br>
>><br>
>> We may be able to get a decent used one (Miller, Lincoln, etc), rather<br>
>> than a Harbor Freight that we need to muck with to make decent. Let's<br>
>> discuss after Martin's class.<br>
>><br>
>> Cheers,<br>
>> Mitch.<br>
>><br>
>><br>
>><br>
>> > From: <a href="mailto:martinbogo@gmail.com">martinbogo@gmail.com</a><br>
>> > Date: Fri, 17 Aug 2012 20:05:48 -0500<br>
>> > To: <a href="mailto:noisebridge-discuss@lists.noisebridge.net">noisebridge-discuss@lists.noisebridge.net</a><br>
>> > Subject: Re: [Noisebridge-discuss] let's get a TIG welder<br>
>> ><br>
>> > Okay folks, here's a Google Form. If you're interested in the class,<br>
>> > please head to it and fill it out.<br>
>> ><br>
>> ><br>
>> <a href="https://docs.google.com/spreadsheet/viewform?formkey=dGprSVA3TzVsMW1Vc0t0dGotV3ZRdFE6MQ" target="_blank">https://docs.google.com/spreadsheet/viewform?formkey=dGprSVA3TzVsMW1Vc0t0dGotV3ZRdFE6MQ</a><br>
>> > _______________________________________________<br>
>> > Noisebridge-discuss mailing list<br>
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