MIG 'gas' welding

Thor1950 · May 9, 2014

Al203 said:
Sorry lads, just got back in. Will definitely get a gas bottle then. Not doing a lot of welding, Thor. New plate on each end of gearbox X member, about 40cm each end? Then a small amount of welding on the rear tub support tubes. Estimate 1.2m of linear weld. Via Amazon I've bought 0.6mm steel/copper covered wire and a box of 0.6mm tips to match. Another mate in the pub tonight said he would drop off a CO2 bottle tomorrow, from his welder. So I'm hoping I'm sorted for that amount of welding.
Thanks for the advice, lads.

Good luck. But rust can be a nasty immigrant and really **** you off

neilly · May 9, 2014

Have you looked at whether you need to change the polarity of the wires in the cabinet?

You say your friend ran it without gas last time he used it.

On mine if I use it as a NO GAS I need to swap the polarity of the wires in the cabinet from where they are when I run it with GAS. ( not sure if this needs doing on all migs)

Cheers

flat · May 9, 2014

neilly said:
Have you looked at whether you need to change the polarity of the wires in the cabinet?

You say your friend ran it without gas last time he used it.

On mine if I use it as a NO GAS I need to swap the polarity of the wires in the cabinet from where they are when I run it with GAS. ( not sure if this needs doing on all migs)

Cheers

Some migs you can't, for Gasless I think you need the torch to be negative and the clamp positive. For gas live torch and -ve clamp

Gas/Gasless migs normally have them arranged in such a way that you can just turn a switch or swap some wires inside the machine. I have no idea if you can make a dedicated gas mig into a Gasless machine

Al2O3 · May 9, 2014

Right lads, i've had a look on google for instructions for the mig set I have, but they are tending to be in Italian. I'll keep searching, but does anyone know what set up I need on it. I'm welding bits of plate, I have cut out of the side of the chassis rails, on to the gearbox X member (grinding off old ones)
The set up I have is as per picture

I now have a bottle of CO2 with a regulator, so sorted for gas. 0.6mm steel wire and matching tips

I'm not sure waht will be visible on the picture when I post this, but basically it has:
A dial with a 0-10 scale
a rocker switch with 1 or 2 options
a rocker switch with min or max options

What should I set it to?

trax · May 9, 2014

Al203 said:
Right lads, i've had a look on google for instructions for the mig set I have, but they are tending to be in Italian. I'll keep searching, but does anyone know what set up I need on it. I'm welding bits of plate, I have cut out of the side of the chassis rails, on to the gearbox X member (grinding off old ones)
The set up I have is as per picture

View attachment 58962

I now have a bottle of CO2 with a regulator, so sorted for gas. 0.6mm steel wire and matching tips

I'm not sure waht will be visible on the picture when I post this, but basically it has:
A dial with a 0-10 scale
a rocker switch with 1 or 2 options
a rocker switch with min or max options

What should I set it to?

you need to test it by welding to determine that, as it could be worn out, blah blah

it goes min1, min2, max1, max2 highest setting max2.

dial is the speed of the wire, if it's too fast it'll push you away and you'll have a big glob of weld. too low and the wire will just blob on the tip.

you also need to set the gas flowrate so it shields nice, but not too high it's a waste.

go and do How to MIG Weld - Tutorial

for 2 mm on that machine, i'd prolly try max2 on speed 6 and change from there.

edit:
oh, but i'm no mig expert by any means! but i'm sure i'll be corrected if more experienced disagree

Al2O3 · May 9, 2014

Cheers, Trax. That's sounds like a great start and makes sense

Ill read that tutorial

Chrisw8 · May 9, 2014

.........and get an auto darkening helmet ...... they're brill

flat · May 9, 2014

Chrisw8 said:
.........and get an auto darkening helmet ...... they're brill

Yeah totally, leave both hands free and you can line everything up then zap and it darkens.

Was cacking it when I first used one and shut my eyes tho lol

Chrisw8 · May 9, 2014

hahaha ........... I thought I blew all the fuses, coz everything went dark !!!!

lol

MIG 'gas' welding

Thor1950

Well-Known Member

neilly

Well-Known Member

flat

Well-Known Member

Al2O3

Well-Known Member

trax

.

Al2O3

Well-Known Member

Chrisw8

Well-Known Member

flat

Well-Known Member

Chrisw8

Well-Known Member

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