Rust Repairs

[philbey]

We have welders at work but I think the mig might be too big? So it's a good excuse to buy one I guess.

Also I think the filler rod for the tig would be more expensive than mig wire?

 

TIG rods are about 68 bucks for 5kg from BOC. I think a 1/2kg roll of Mig GASLESS wire is about 40 bucks, GAS wire should be cheaper.

 

I'm interested to see if you can get away with regular Gas welding rods for Tig on car panels etc; the actual TIG rods are most likely more pure, for ticketed pipe welding etc.

 

As for disposable gas bottles, that's an outrageous prospect. If you are getting a BOC bottle, it'll pay off much quicker. Get the E size, not the D size, it's much better value for money.

 

an E size Argon (not Argoshield) is about 140 bucks to fill for 4.5 m^3 but a D size is 90 bucks for only 1.5m^3

[snot35]

Yep, I'm with philbey. E size bottle is better. I've been using a Cigweld 135 for my stuff and it does a brilliant job of panels. It would probably struggle if I started doing engine mounts and that sort of fab, but I haven't tried yet. Cigweld spools are available from Bunnings pretty cheaply. Disposables will last long enough for you to determine your settings and that's about it.

 

There are so many variables involved in getting good welds, I'd avoid trying filler rods/materials that are being used outside of what they're designed for unless you have a stack of materials and time spare to do a lot of practice runs first.

[camcam]

BOG !!!!! HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA

[RedKE30]

BOG !!!!! HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA

 

This comment did not even require one tenth of the "H"'s and "A"'s used. :lolcry:

 

This thread has some good info in it, makes me wanna try my hand at rust repairs.

 

That is all.

[SLO-030]

I've been using 0.6mm on the repairs I've done so far, seems to work really well.

 

^^^^ 0.6mm will be the shiz. have only used 0.9 and 1.2 in the time i've been MIG welding so was unsure if the went as low as 0.6mm

 

 

BOG !!!!! HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHA

 

 

:lolcry: :jamie: :( :)

 

there is nothing funny about soley using bog as a rust repair. I've had to re-do ALOT of what previous retarded owners of my wagon have done.

Edited January 8, 2010 by SLO-030

[bmxsexmonkey]

take the car to luc and ryan. they'll sort it out

[machg]

I recommend a self-tinting welding mask too, sooooo worth the money, flash burns are not nice.

[SLO-030]

^^^^ I second this motion. always good to have both hands free to work with.

[1JZKe55]

the best way to weld sheet metal is to use .9mm silicon bronze welding wire with argoshield light in ya welders it's not cheap stuff around $200 for a 5kg roll.

But it uses less amps to melt (about half of normal .9mm mig wire) which means your not as likely to blow hole in what ever your trying to weld and less warping its very easy to grind and shape i use it for all my rust repairs..! like this genuine SLR 5000 the whole back window frame was totally rusted out :lolcry:

 

oh and i think you can get a gasless version too but it would be pricey

[SLO-030]

1JZKE55, I have probably said it beofre but your a wonder when it comes to welding and metal fab :lolcry:

[rob83ke70]

The last thin nasty stuff I had to weld up (exhaust mufflers) I got the mig out at work, and looked at the settings on it, figured that the apprentice was the last to use it so it so it should be set on heaps more current than it actually needs, dropped it down a few notches, dropped the wire speed down a bit, and did two small test runs, got it reasonably nice, and welded the muffler.... very confidence inspiring actually, I was happy with the result.

 

I have seat mounts to weld and reinforce on a ke11 in the near future, and a number of seat belt mounting points that desperately need reinforcing. I can't believe I'm going over basic safety issues that the factory weren't worried about, although I suppose this was 40 years ago. I have to weld some metal up on the transmission tunnel as well as a previous owner has cut massive holes in several places possibly for different gearboxes that its had in it over the years.

 

This thread is rather confidence inspiring in terms of mig usage, I've never been *that* confident on a mig, but I'm feeling a lot more positive. Next step is to buy a mig for the garage now, bit hard to take ke11 in bits and no engine to work and back to weld stuff.

 

The general consensus is that a mig is better than an oxy welding kit for body repairs? I was told the other way around when I was at tafe doing welding (briefly for a mechanical trade qualification). I have an oxy kit, but no gas bottles. I'm reasonably confident using an oxy to weld too. What would be the downfall of using an oxy for body repair jobs? It has been suggested that you should not weld exhausts up with oxy, something about it rusting out? I'm very confused, everybody has a different story!!! I was told mig would put more heat into the panels and warp them, or that the mig welds are really hard and can't be filed flat, then somebody else told me that oxy welds can't be filed back or that they use more heat than the mig....

 

Anyway, some of that body work in those photos looks really really really good.

 

Robert.

[camcam]

This comment did not even require one tenth of the "H"'s and "A"'s used. :lolcry:

 

sorry lmao

[1JZKe55]

put the oxy kit on ebay and get rid of it that old school way of welding you put too much heat in your panels if you want small neat welds use a tig but other than that go buy yourself a 100 - 180 amp welder with some silicon bronze wire and a grinder with a 80 grit flap disc it comes off like a hot knife going through butter its all i use and i've been doing this kind of work for nearly 14 years

now i'm starting to show my age lol :jamie:

[philbey]

All the old rodders cut their teeth (and roofs) using Oxy welders, but my uncle reckons TIG is the way to go, MIG tends to create a much harder weld to work (although 1JZ's 80 grit method would make short work of that issue).

 

I've been doing work with a TIG, just getting my chops up at the moment, but for someone who's only ever blown holes in <2mm material with a MIG, I was blown away at how.... "easy" it is to weld 1mm material with a high frequency TIG!

[snot35]

Yeah TIG will give you a beautiful weld without much trouble on mild steel. If you have the means they're fantastic. Otherwise MIG is just fine. The fine wire also allows you to use less heat. Just as long as you keep everything clean and use the correct tips and rollers for the wire that you are using, it's actually surprisingly easy to get a good result.