Question about Miller SYNCROWAVE 250 DX TIG RUNNER WELDER 951117

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Argon does not appear to be coming from gun.

Almost as if I am not grounded.

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Please explain your question in detail.

Posted on Dec 10, 2008


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1 Answer

Argon gas is not exiting at the gun tip so the weld splatters. what can I check?

This is a common problem with lincolns units. Check that your gun is ALL the WAY in the socket, if for some reason you took off the feed rolls make sure the wire guide arrow is facing the right way.

Sep 22, 2011 | Lincoln Welding Tools

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I have a 115V CH mig/flux welder. I can not get any *********** at all. Has worked fine in past. Am getting gas to the nozzle. Bead looks nice but even with the lightest gage metal, bead just flakes...

Sounds like you have the wrong polarity or wrong gas.
For solid wire: use a gas mix of 75/254 argon/CO2 and ground clamp must be on the negative terminal /pole.
For core wire: No gas is needed but the polarity must be: ground clamp on positive terminal side.
Hope this help.

Sep 05, 2011 | Campbell Hausfeld Welding Tools

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I have a lincoln power mig 255 and every time i weld little holes appear in the welds. what could this be?


This could be a problem of gthe gas you are using. Make sure to use mix 75/25 argon/CO2 for mild steel welding, argon 100% for aluminum and trimix helium/argon/CO2 for stainless steel.
Also check your heat (voltage) 16-22 is enough for weld of most steels less than 1/2 inch.

Aug 06, 2011 | Lincoln Magnum 100L 10' 025035

1 Answer

Have a lincoln sp200. Trying to run aluminum wire not having any luck. I am running straight argon gas, I get basically a glow the wire melts no penetration. Do I need to reverse polarity or what. I...


You should only reverse polarity only if, before you were using innershield wire on the same MIG welder.
Your gun should be connected to + and ground to negative and you should use a spool gun for it.

Argon gas is ok, but for thick metals 1/4" and above you should use a mix of 75/25 argon/helium.

Good luck!

Jul 10, 2011 | Lincoln Welding Tools

1 Answer

New at welding jewelry. was given a puk 111. have not got the argon as yet. should the unit still produce an arc even without the gas? i have no arc at any of the settings. what am i missing. thanks.

Argon is an inert gas and in welding is used to produce a shield around the weld. It protects the work from impurities. The arch comes directly from amperage shorting to ground through the rod. The heat generated from this short melts the rod into the work. In short, the welder should work without the Argon and needs only Amperage in the rod and a good ground to create an arch. Double check the ground on the work. In this case, your Ring. Please rate this answer for me and feel free to write again. Thank You.

Apr 03, 2011 | Welding Tools

1 Answer

What are the hot and negatives on my astro power mig welder?

If you use argon gas the gun is positive and the clamp is ground/negative. If no gas is used then it is the opposite

Feb 05, 2011 | Astro Pneumatic Welding Tools

1 Answer

Some proplems face in welding aluminum

Are you asking about what the problems would be? First for mig welder, you can't push small aluminum wire through a very long cable. You need a teflon liner for it to work at all. A spool gun works better. Be sure to use correct gas for aluminum. Usually 100%argon, but some people use Argon/helium or helium. Use direct current reverse polarity (electrode positive) from constant voltage (CV) power supplies. If shallow penetration is required (i.e. for weld surfacing and cladding) straight polarity (electrode negative) can be used

Sep 27, 2010 | Lincoln Electric Welding Tools

1 Answer

My mig welder does not seem to weld like it used to. it seems like the argon is not working, like im trying to weld with the tank closed. I checked the tip and argon seems to come out when i hit the...

You may need a new argon regulator for your tank. I had similar problem with mine and purchased a new regulator for about $69 and solved the issue. Also your lead from welder to gun may need to be replaced. Purchased mine at

Aug 12, 2009 | Welding Tools

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