Mig welder amps

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Dr_evil said:
Tigs kinda like oxy welding but with electricity :p same idea feed in the filler and get your heat/distance correct

Need pure argon to use it though if not you'll ruin the tungstens
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Maybe leave it where it is then eh:)

You found my speedo cable clip yet:)
 
MadManish said:
How thin steel could I weld with an arc?? Sorry for the daft questions I just don't want to be spending more money than I need to for the jobs at hand
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I'd say no thinner that Landy exhaust pipe, you can just weld pipes together if you are good.
I can on a good day but mostly have to use mig
 
We looked at TIG, but the MIG we have is extremely versatile and goes to 250A, so big enough to do almost anything we are likely to want to do.

TIG is good for fine detail work where MIG would perhaps be a little too much.

We use a full-size CooGar bottle on ours, we get that through our sheet metal suppliers who charge us the rental and refill prices that they get, and as they are bulk users (they have a laser cutter that takes full-size metal sheets) we get a decent price.

Peter
 
Arc will be cheaper all round (as said )

you will need plenty of practice for small gauge
start off with big chunks of pig iron to get the feel then work down to small stuff
The guys on here will help you out with rod size and techniques once you have the feel

:mil23::mil88::mil1::mil10:
 
Dr_evil said:
No point practicing on pig iron if he wants to weld thin mild :p
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There is every point in practicing on pig iron if he has never welded before
You always start big so you can see how the weld works
blowing holes in stuff is no good to start with
 
Last edited:
No he may as well start on scrap mild instead of iron which needs a lot of prep work

Not hard to get hold of thick mild but the best way to practice stick is to lay down a pad of beads on a sheet of 3mm adjusting heat as you go so you don't blow through as it warms up
 
Pig Iron is cast, and needs specific rods, as does stainless and all the other metals!

To become proficient, one of the exercises is to lay 'strings' around 75mm long tight against each other until you have a square 75x75.

Then turn it through 90 degrees and do the same on top. then repeat the process.

You should finish up with a pad of weld 75x75x12 (or however thick you wish to make it!)

Once you can do that without any blowback, you are ready to begin to practice sticking things together!
 
Oldseadog said:
Pig Iron is cast, and needs specific rods, as does stainless and all the other metals!

To become proficient, one of the exercises is to lay 'strings' around 75mm long tight against each other until you have a square 75x75.

Then turn it through 90 degrees and do the same on top. then repeat the process.

You should finish up with a pad of weld 75x75x12 (or however thick you wish to make it!)

Once you can do that without any blowback, you are ready to begin to practice sticking things together!
Click to expand...

That is welding 101, and is the base/start for anyone who wants to learn how to weld.

Have seen lots of welded chassis pictures on here , that have looked like monster weld:eek::eek::eek: To many are cold welded, a bead stuck on top of a patch. A indicator of lack of penetration.
 
I'd agree with many others here. Mig is the way to go. Buy a good 2nd hand unit and check it over properly.

It's just not worth 'learning' how to go that thin with MMA - as already said, its just not the tool for the job.
 
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