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Old 10-14-2013, 02:31 PM   #3661
David R
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Set the machine for the 1/8". Favor the heavier metal when you weld it.

Forehand will help not burn through the tube.

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Old 10-14-2013, 02:36 PM   #3662
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Forehand will help not burn through the tube.

David
"Forehand" -- meaning, push in the direction of the clean material...?
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Old 10-14-2013, 03:02 PM   #3663
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Yes, wire pointed a little towards the finish line. It will result in a flatter bead with a little less penetration, but it also preheats the metal more than backhand. It makes it easier to see what you are welding.

David
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Old 10-14-2013, 03:28 PM   #3664
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That was 20 years ago. With a modern machine all I have to do is set down the MIG torch with steel wire and pick up the spool gun loaded with aluminum, start welding aluminum...no switches no nothing, just grab one or the other and weld. Dual bottles of course.

A modern MIG with a skilled operator completely takes the place of everything including a TIG unless you're welding Pepsi can bottoms together I never find a reason to have TIG at home and only use the TIG at work as a $9,000 stick welder.
What kinda stuff do you weld with a MIG>?

I find less use and applications where it is acceptable in what I do...as a matter of fact, most prints say GTAW..

MIG around my shop is relegated to boat trailers and trashcans..while the 6K & 13K TIG machines are actually makin me money
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Old 10-14-2013, 03:42 PM   #3665
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What kinda stuff do you weld with a MIG>?

I find less use and applications where it is acceptable in what I do...as a matter of fact, most prints say GTAW..

MIG around my shop is relegated to boat trailers and trashcans..while the 6K & 13K TIG machines are actually makin me money
You should try a modern synergic MIG set. They can cope with a pretty wide range of jobs, and cannot be compared to older sets.

I wouldnt agree that they can replace a TIG set, but for some production work are well worth looking at very carefully.
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Old 10-14-2013, 03:49 PM   #3666
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You should try a modern synergic MIG set. They can cope with a pretty wide range of jobs, and cannot be compared to older sets.

I wouldn't agree that they can replace a TIG set, but for some production work are well worth looking at very carefully.
Not really into mig'n to much..My Miller is way good enough for me..
I will stick with what I know..pun intended

Just curious as to where MIG applications can replace TIG.
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Old 10-14-2013, 04:01 PM   #3667
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Pulsed spray MIG has a puddle like TIG and will put up with about as much dirt or contaminants. My machine will do pulse on pulse with aluminum spool gun to make the stack of dimes like TIG. I find that option useless. I use spray mig or pulsed spray for aluminum when my tig does not have enough balls.

All processes will pass a bend test.
All processes have their application.

Go Mig weld outside on a windy day and pass an AWS visual inspection. Sometimes its gotta be stick.

I build air tight heat exchangers. I can do them with pulsed spray MIG, but TIG will have almost no leaks and look better.

Go Mig stainless Kitchen stuff.....

It depends on what line of work you are in. We do a lot of repair welding. Each job has its own problems.

Besides some jobs I get paid by the hour.

The machine does not make the weldor.

TIG is what we use most.

Just my two cents.
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Old 10-14-2013, 04:38 PM   #3668
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David R:
Thanks for the insight.
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Old 10-15-2013, 01:33 AM   #3669
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Not really into mig'n to much..My Miller is way good enough for me..
I will stick with what I know..pun intended

Just curious as to where MIG applications can replace TIG.

Someone I know makes aluminium motorcycle fuel tanks, using rubber pad forming. Obviously there is a fair amount of welding involved here, so he tested a synergic MIG, and found it capable of around about 70% of the welding required.

Production time would have been cut by around 40%, and the only thing against the MIG process was the machine cost 6000! This was on 1050 2mm sheet, and quite possible to program the set to provide pretty much the same results as TIG, and as soon as the best settings had been worked out, to store them in memory (I think about 300 job capacity).

Obviously many jobs are only possible with TIG, but the top end European manufacturers are coming up with come very clever MIG technology nowadays, and I guess the reason behind that is to greatly reduce the skill needed to do a particular job, and reduce labour costs?
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Old 10-15-2013, 04:49 AM   #3670
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Ahhhhh, "The Old Reduction of Skills needed to preform the job"...there by reducing labor costs..this usually results in a fractional loss of quality, along with a quality trained labor force, all in the name of "Profit Margins"...sad really.
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Old 10-15-2013, 05:37 AM   #3671
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Would agree with that entirely. But maybe better to still have some industrial production going on outside the Far East, through dumbing down the need for such highly skilled work force, by use of high tech welding plant?

Here in the UK we are pretty much a service industry/speculative economy now, and as we dont actually produce much, cant see that altering anytime soon.
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Old 10-15-2013, 06:02 AM   #3672
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Originally Posted by Twin-shocker View Post
Would agree with that entirely. But maybe better to still have some industrial production going on outside the Far East, through dumbing down the need for such highly skilled work force, by use of high tech welding plant?

Here in the UK we are pretty much a service industry/speculative economy now, and as we dont actually produce much, cant see that altering anytime soon.

Twin, it is funny you say that, one of my customers buys alot of machined SS casting from the UK and the Quality of the machine finish is really nice, makes it nice to weld on, the price must be good also...
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Old 10-15-2013, 09:11 PM   #3673
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We MIG 90% of all our stuff at work.

CP250 all the way up to Millermatic 200 multi-process and the Pipeworx 400 with RMD


Replaced a framerail in this one


Added this staircase on top of a 14' tall tank with a Trailblazer 305d and a suitcase feeder


Boss-man's dog box


PR1 rail, 2" &3" sch 40 pipe with .035 hard wire


7' dia, 9000lb die 1/16" flux-core 6 passes per


Huntin' buggy for a customer. XMT-305 with a Optima pulser and push/pull feeder. And a Dynasty 350 here and there


AL mig on 10ga 4043. Access controls boxes 24x32x60". Ive built/finished 18 of these.


1/4" and 3/16" plate ramps for haul truck. 275lbs/pair.
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Old 10-16-2013, 03:28 AM   #3674
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Nice stuff!
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Old 10-16-2013, 05:00 AM   #3675
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Thanks. Thats just some of the more interesting shit we do. I learn something new every day, thats my favorite part of the job.






















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