Used Welder Advice

I want to buy a used AC/DC stick welder for my shop. I particularly want
one that will burn 1/8" 7018 with a decent duty cycle. Like up to 250 or
300 amps. I want red or blue. I want something as reliable as an old
"torpedo" welding machine. Translation: Maybe old, inexpensive, and built
to last a long time. Intended use rate: sporadic.
Suggestions?
Reply to
Steve B
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I never heard of anyone burning 1/8" 7018 at 300 amps. The maximum that I went to was about 150-155. I am not an expert but I would expect that your welding rod would melt at that amperage.
Old CC welders typically sell for not too much at liquidations, worth taking a risk:
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Reply to
Ignoramus14860
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Thanks for the links.
I know the range on the rods, I just like to use a larger machine than a machine that is running right at the top of its capacity.
When I used to dive, we used to use the underwater hollow copper alloy cutting rods with 60 psi down the center of the rod, and we'd use them at highest setting on the machine, usually a SA200.
Steve
Reply to
Steve B
My first suggestion is that you rethink your requirements, which are conflicting. If you primarily want to run 1/8" 7018, you will never need 300 amps. Also, high duty cycle generally conflicts with cheap. You might find a decent used DialArc 250 for under $400 - maybe.
I own five welders in a home shop. For stick welding I run a Miller Thunderbolt AC/DC. If I had to weld up a bunch of 1" plate vee grooved (meaning, lay in bead after bead as fast as you can) I'd pick up another buzzbox and use them in tandem. Around here I see them used for around $100 a lot. I have never found a clean used DialArc 250 for what I considered a good deal.
You could also go slightly outside your red/blue spec. Here, for example, is an example of what may well be a rebadged Miller machine with an Airco brand:
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Finally, for an inquiry such as yours, you should post your location. If you live in the Australian outback, if I know of a welder for sale in e.g. West Seattle, it won't do you much good.
GWE
Reply to
Grant Erwin
Okay. I live in Las Vegas, and I need a good used machine for general shop use. I have heard the DialArc name quite a few times before.
Steve
Reply to
Steve B
I agree with Grant about rethinking the requirements. Taking the bottom of the Miller line Miller Thunderbolt he mentions, it has a 50% duty cycle at 150 amps AC. 7018 runs on AC just fine, if you chip any slag you will have a tough time getting to 50% arc time in 10 minutes. Duty cycle data on page 2 of
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I have a couple of 180 to 225 amp buzz box welders. If I keep the fan clean and oiled, I can run 1/8" rod for a couple hours of final weldup on a custom off road bumper with no issues.
Grant Erw>
Reply to
RoyJ

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