"Ignoramus30916" wrote in message
...
On 2011-04-12, lid wrote:
On Mon, 11 Apr 2011 21:09:17 -0700, Bob La Londe
wrote:

On 4/11/2011 9:00 PM, Ignoramus9930 wrote:
On 2011-04-12, Steve wrote:

Steve, do you know if I can use fluxcore wire in a MIG gun that was
designed for welding with inert gun?

Or do I need two guns, one for welding with inert gas, and another gun
for fluxcore?

i

I don't see why you would need two guns. My little chinese welder does
flux core just fine, but it also has a hose out the back to hook up a
flow regulator for inert gas. I don't use flux core in my Miller and
the gun is very similar. Ask Ernie over in the welding group to be
sure, but I don't know of any problem. Just might want to have some
spare hoods as they get all crudded up. Spare tips too. I would not
use a regular gun for aluminum though. Hacks like me use a spool gun,
and serious outfits will use a push pull gun. Of course they will also
have a fancy pulser and other cool things I can't afford.


Ig: you can use the same gun for both flux cored and solid wire
welding. If you then switch to aluminum, keep and install a separate
gun liner for that. The steel wires will leave oils and dust inside
the liner that the aluminum wire will pick up. This will make a total
mess when welding aluminum. The key to MIG welding aluminum is CLEAN.
Any source of dirt will lead to problems. It is best to wash the
aluminum base metal in solvent before welding it. Usually
trichloroethane, which is pretty nasty stuff.
Dave

Dave, I had nothing but headaches from welding aluminum, and am not
even considering using this LN-25 for that purpose. I want steel
only. I bought a tweco compatible import gun this morning.

My plan was to fix up this LN-25. It seems to work fine, as far as
contactor, feed mechanism, etc are concerned, and just needs a gun.

Then, with a new gun and in a working conition, I may try to sell it
together with the SA-200 that I am fixing.

i

Do not expect the 110 on the SA200 to drive much more than a grinder.

Steve