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Tool Talk Discussion Forum

Inverter Welders

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JOHN

01-24-2004 13:27:28




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Harbor Freight has 2 80 amp inverter welders for sale,anybody own either of these?They are ArcOne and Chicago Eletric.




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Bill 52 8n

01-25-2004 22:38:20




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 Re: Inverter Welders in reply to JOHN, 01-24-2004 13:27:28  
I bought an ArcOne 200 amp tig/stick machine last month. I used it over the weekend to tig some stainless at a local restaurant. Worked great! It was nice only having to move around 20 lbs of welder, the 100lbs of argon cylinder was another story LOL (I really need a smaller cylinder). 80 amps does seem a little small, I was only going to get a 130 amp welder but figured if I was going to spend the money, I might as well only do it once. If you get a 130 amp ArcOne you can still plug it into a 110v outlet (my 200 amp only needs 220v, 30amps). I got my off the web, the guy that runs it is a stand up guy, very nice to deal with (and no, I am not affiliated with him).

Bill

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John

01-26-2004 15:08:59




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 Re: Re: Inverter Welders in reply to Bill 52 8n, 01-25-2004 22:38:20  
My buzz box is the LincolnAC/DC225/125 that I bought 20 yrs ago,my question is can I add a 9 series tig torch to it?It goes down to 30 amps DC.I want to tig between 1/16-1/8 stainless.I would like to know before I buy the tig torch what amperage would be needed,I am thinking maybe it does not go low enough.The welding course is booked intill Sept at the local vo-tec so I look for the answer in print first,when I can not find the answer I try this.ThankYou for any help you can give me.

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Bill 52 8n

01-26-2004 22:00:12




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 Re: Re: Re: Inverter Welders in reply to John, 01-26-2004 15:08:59  
When I did 1/16th stainless with mine i set the machine at 35-40 amps and used the foot pedal to control the heat, unless your lincoln is remote capable I don't think it will work well. If your only planning on doing 1/16-1/8 metal, then the smaller "tig ready" welder you were looking at would prolly be your best bet since you have the lincoln to do anything thicker.

Bill



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John

01-27-2004 15:56:33




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 Re: Re: Re: Re: Inverter Welders in reply to Bill 52 8n, 01-26-2004 22:00:12  
Were you welding a dishwasher by any chance?John



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T_Bone

01-27-2004 00:24:52




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 Re: Re: Re: Re: Inverter Welders in reply to Bill 52 8n, 01-26-2004 22:00:12  
Hi John,

Your wanting to use a process called scratch start Tig and is where you just barely touch the base metal to start the arc, like striking a match. It takes a light hand as you don't want to comtaminate the tungsten anymore than necessary to estabilsh the arc.

To use that machine effectively then you need to use a dropper resistor made from a piece of 3/32" or 1/8" filler rod, depending on the amount of amps you want to drop.

Attach the 1/8" filler rod to the welding bench with a vise-grip and let it hang vertical then attach the ground clamp to the other end of the filler rod.

As the arc is established the filler rod (dropper resistor) will begin to heat thus lowering out-put amps at the torch.

CAUTION as the filler rod can become cherry red dpending on the amount of amps being dropped.

To adjust for the correct amount of amps required of the weldment, one could trim the filler rod to different lengths or change the diameter although I've never found this to be necessary.

T_Bone

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Bill 52 8n

01-27-2004 15:55:46




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 Re: Re: Re: Re: Re: Inverter Welders in reply to T_Bone, 01-27-2004 00:24:52  
Wow, would never of thought of that to for lower amps. Does sliding the ground clamp up and down the filler rod change the resistance or do you need to cut different length pieces? Sliding it would seem like a way to "fine tune" it.

Bill



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John

01-27-2004 15:50:30




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 Re: Re: Re: Re: Re: Inverter Welders in reply to T_Bone, 01-27-2004 00:24:52  
That's a good tip T_Bone,I would never have thought of that,I'll give it a try as soon as I get a tig torch.Thanks again.John



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T_Bone

01-27-2004 16:19:27




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 Re: Re: Re: Re: Re: Re: Inverter Welders in reply to John, 01-27-2004 15:50:30  
Hi Bill,

I never thought of that but that should work well. Trimming should be the same as sliding but I just never had the chance to change from the bottom posistion. This drops alot of amps, very quick. Usually a 1/8" SS filler rod does really well.

Very few machines require the 3/32" filler rods but when they do, it's cherry red all the time. Very easy to start a fire or get burned.

You guys are dating my age you know. This comes back from the 70's...LOL

T_Bone

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Not big enough

01-25-2004 08:50:40




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 Re: Inverter Welders in reply to JOHN, 01-24-2004 13:27:28  
80 amp not big enough for any thing but maybe car fenders. A GOOD 130 amp DC would be minimum or 180 amp AC. If you once use DC, you will never go back to AC. Watch the farm sales. Just about has to be 220 volt. I have gotten by on a 220 volt, 30 amp breakers.



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Scott

01-24-2004 14:43:04




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 Re: Inverter Welders in reply to JOHN, 01-24-2004 13:27:28  
John
Save your money and buy a name brand welder. The welders Harbor Freight has for sell are one time use welders. When it breaks after the first use, you have to throw it away as no parts are available for them. I don't know how many times I have been in in the local welding supply store when someone came in looking for parts for their welder they bought at H.F. only to be told no parts are available for them even from H.F. I'm sure someone out there has bought a cheap welder and it has held up fine for them. But they are few and far between.
You will pay more for a name brand but it will last for years.

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