[Noisebridge-discuss] welding shop?

[Jake]

I believe that if we use flux-core wire with the machine, there is no gas 
involved.

that said, the machine has an electric solenoid valve that cuts off gas 
flow when it's not welding, and if that valve (and the regulator attached 
to the tank) are in good condition there will be no leaks even if you 
leave the tank on.

If you're talking about an electric timer to shut off the tank, you would 
be depending on an electric solenoid valve just the same, so I don't see 
how that would be different unless you somehow used a valve that went 
before the regulator (which is much higher pressure), but I think just 
keeping our regulator and solenoid valve in good condition makes sense.

as for masks, there are the old-fashioned kind which are always dark, 
which are great for watching other people weld, and have been used for 
hundreds of years by professional welders - you just tilt it up, prepare 
to start welding, and then nod your head to flip it down over your face 
and start.

the modern automatic masks come in two flavors - no battery (powered by a 
solar panel in front, using the light from the weld) or those with a 
battery.  The latter can fail if the battery goes dead, but either kind 
can have problems (or be misadjusted) resulting in delayed activation, 
exposing your eyes to a brief flash of light before they darken.  Each 
such helmet must be tested regularly by someone who knows the difference 
between OK and not OK.  Perhaps we can build something with a photoflash 
and a photodiode, for testing masks' response times before using them.

-jake

On Sat, 22 Oct 2016, gcoetzee42 at gmail.com wrote:

> This is a tip from my time at the lvl1 hackerspace in Louisville. We discovered that unless we had one of those auto turn off timer valves (like on a propane grill) one of us would inevitably forgetfully leave the gas on and leave. A week later the aged welder would have slowly leaked all our fancy air away. We tried yelling at at each other for a bit first and then just bought the valve. Peace reigned.
>
> I like the harbor freight welding gloves and weird leather sleeve cloth welding jacket. Seems to have been enough all this time. Don't know about the helmets. I've heard all the way from absolutely don't to good.
>
> Sent from my iPhone
>
>> On Oct 22, 2016, at 2:50 PM, jarrod hicks <hicksu at gmail.com> wrote:
>>
>> I just picked up a MIG/Flux-Core yesterday on craigslist. I, and others, figured it will be a good start. This is it:
>>
>> http://www.lincolnelectric.com/en-us/equipment/Pages/product.aspx?product=K2481-1(LincolnElectric)
>>
>> We need SAFETY gear and other accessories. Other welders and equipment, are of course welcome. I wouldn't personally bring in any equipment that is broken or unreliable.
>>
>> I have a list of things we still need to acquire to get going (its written with myself as the audience, but here it is):
>>
>> Safety Gear: Check craigslist for this stuff
>> Signage: I expect there is plenty of already made safety signage related to welding. There should be as much safety information on the walls as possible.
>> Helmets: Full Face, Neck, Head coverage is preferred. Auto Darkening is good, but expensive. We should have more than one. Hand held shields are also a nice option for short tasks and  training sessions. Just closing your eyes is a REALLY BAD idea. “Auto-darkening is a nice feature, but a #10 filter is sufficient for many welders. Some prefer a standard helmet with proper shade. If working with higher-amp arcs, you will need more shade. “
>> Gloves: We should get several types and have them clearly marked for hot area work and their intended usage: i.e. forge or welding, MIG / TIG
>> Clothing: Avoid synthetic materials, cotton / leather is best. Exposed skin gets “sunburned”.  “Leather clothing is the safest choice, but it is also the warmest. Therefore, many welders wear leather sleeves, longer gauntlet gloves, a leather apron, or a kind of modified welding bib”  Protect your feet, if loner steel toe boots were possible, that would be good.
>> Consumables
>> Gas, Argon for MIG
>> Gas Container(s)
>> A cart for the gas containers and a means to secure it upright for safety
>> Rods and wire for welding
>> Hand tools This is probably worth scouring Craigslist for
>> Clamps (many types)
>> Hammers, chipping hammers
>> Bonus: Anvil and misc metal work / shaping
>> Angle grinder and various discs
>> Metal Shelving for tools
>> Repurpose some of the metal shelving and scrap for this
>> Welding table(s)
>> Need to source two similar sturdy metalwork / welding type tables for the room.
>> If we get welding stuff we could build the rest of the hot area furniture ourselves
>>
>>> On Sat, Oct 22, 2016 at 2:22 PM, Jake <jake at spaz.org> wrote:
>>> i see that the welding shop is looking really good!
>>>
>>> http://imgur.com/gallery/ElehX
>>>
>>> but there's something missing...a welder?
>>>
>>> is there a plan to get one in there?  TIG hopefully?
>>>
>>> I might be able to find a MIG welder to put in there for now..  or are things on hold for some reason?
>>>
>>> see you all tomorrow at the laser party.
>>>
>>> -jake
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