Thanks guys. One less thing in my life to worry about.
> From: arvidj@visi.com
> To: jandkstone99@msn.com; shop-talk@autox.team.net
> Subject: Re: [Shop-talk] Basic MIG Welding questions
> Date: Sun, 25 Jan 2009 23:04:26 -0600
>
> I have never worried about getting a perfect seal on any of the fittings as
> I did not think there was much pressure in the line. After all there is this
> big hole at the end of the gun so ...
>
> I have always just shut the cylinder valve when I was done and let it go at
> that. I've been more worried about what might leak INTO the lines after I
> shut it off and left it sit until the next weekend than what the gas that
> was suppose to be in there did to the plumbing while it was sitting. That is
> why I usually turn the wire speed down as low as it will go and pull the
> trigger a few times if it has set unused for a few days. This allows the
> preflow to purge the air or what ever might have gotten in there while it
> was sitting unused out and I am sure to get good shielding gas right at the
> start.
>
> Arvid
>
> ----- Original Message -----
> From: "Jim Stone" <jandkstone99@msn.com>
> To: <shop-talk@autox.team.net>
> Sent: Sunday, January 25, 2009 9:00 PM
> Subject: [Shop-talk] Basic MIG Welding questions
>
>
> >I finally had a chance to use my MIG (Hobart 140) with CO2/Argon shielding
> > gas. My initial welds were pretty poor, but I got better as I went along
> > and
> > the lessons from my welding class came back to me. However, I have two
> > questions about using it with the shielding gas. First, I was surprised
> > thate
> > the instructions didn't call for any thread sealer on the gas connections,
> > nor
> > for any testing for leaks (e.g., soapy water). Is this correct? Don't I
> > need
> > to worry about this?
> >
> > My second question is pretty simple: When I am through for the night, is
> > it
> > necessary to purge the line after shutting off the gas cylinder? Or can I
> > just
> > leave it alone and let it leak out slowly over time?
> >
> > Thanks.
>
>
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