[Vanhackspace] Oxy/Acetylene Rig.

[Dave Dillabough]

If you are going to weld you should build a welding booth. Walls and floor
should not be flammable. You can get cement board in 4x8 sheets that would
work OK. You should also have ventilation. Welding can generate nasty
fumes and burning acetylene generates a black soot that gets everywhere.
Smoke alarms can be an issue and you should check with your insurance too.
Acetylene leaks can make a big bang. In general with OA welding you should
know what you are doing with pressure, flashback arrestors etc. or any
number of things can go impressively wrong. The rate that you can draw
acetylene from a cylinder depends on its cross section.  A B cylinder
won't generate enough acetylene for most cutting as it does not have a
large enough area. If you try to pull too much acetylene out you will
start drawing the acetone that the acetylene is desolved in.  You would be
better off using propane for cutting (a BBQ tank) as you will get enough
gas and it is much cheaper. Propane will work with acetylene tips although
a propane tip will work better.

OA can be fun if done safely. If you go ahead I would be happy to help
with a tutorial. I could do one on TIG or plasma cutting too.

Dave


On Tue, June 22, 2010 1:49 pm, dan anderson wrote:
> The slag would leave big scars, yes. A canvas dropcloth won't cut it.
> You can drop a sheet of plywood though, and as long as you're careful
> to blow slag straight down it'd work, but it means keeping a sheet of
> plywood around (honestly not the worst idea, if folks are
> anglegrinding or using the MIG rig).
>
>
>
> On 22 June 2010 12:46, Derek Anderson <derek at enomaly.com> wrote:
>> Acetylene torch + wooden floors == "Whodathunkit?"
>> Usage out in the alley would probably be OK though...
>>
>> On Tue, Jun 22, 2010 at 1:35 PM, John Craver <jcraver at shaw.ca> wrote:
>>>
>>> It has both.
>>>
>>> ----- Original Message -----
>>> From: kevin griffin <kevin at cavewallarts.com>
>>> Date: Tuesday, June 22, 2010 10:54 am
>>> Subject: Re: [Vanhackspace] Oxy/Acetylene Rig.
>>> To: vanhackspace at lists.uselessdegree.net
>>>
>>> >
>>> > > Hey, I just picked up a small oxy-acetylene (think 40cf oxy
>>> > and a B
>>> > > size acetylene tank) welding/cutting rig from
>>> > craigslist.  It's in
>>> > > almost new condition, and I got a screaming deal on it (the
>>> > guy bought
>>> > > it and then realized that it's overkill for his
>>> > purposes).  Is this an
>>> > > item we want at the hackspace, or is it considered too sketchy?
>>> >
>>> > Does it have a welding tip and or a cutting extension?
>>> > > _______________________________________________
>>> > > Vanhackspace mailing list
>>> > > Vanhackspace at lists.uselessdegree.net
>>> > > http://lists.uselessdegree.net/listinfo.cgi/vanhackspace-
>>> > uselessdegree.net
>>> > >
>>> > >
>>> >
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>>
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