Welders

Can anyone explain the fors and againsts of mig gas and no gas, uses and limitations. thanks

Gasless is useful when outside and its very windy ... however if you shield the area from wind you will get a far better weld that is stronger. Gas mig is better for thicker materials like chassis work.

plus the gas stops it setting fire to your truck as much lol as you just pull the trigger a little to let the gas out to put any small fires out when your welding lol.

gas mig every time if i can help it if not then trust arc with a 4mm stick does most things.

Gasless for small thin material jobs that can either be ground down to look nice, or somthing that doesnt matter if the weld is butt ugly, or;
Gas of frequent use, thinker material and makes for a much neater weld.

All in all Id go for Gas, but unless you can get your gas from your local pub its around £9 a month rent for the bottle, plus then a charge to get it filled back up again. That said gasless wire (flux core) costs more....so swings and roundabouts!

right i feel that most of you lot have it the wrong way round,
gasless works better on thicker material since then you can turn up the wire feed(what is the current) as well as run a higher voltage.

but on thinnner stuff gas is better due to it helps cool the weld down wile welding, removes some of the impuraties that causes the weld pool to colapse wile welding.

but tbh as long as you have it set up right you can use gasless on body work and thicker stuff.
if you have a cheep source of gas i would opt for that all the time.

pub gas (low quality CO2) is the least i would use, but if you can get it the best is argon, and then you can go onto the argon and co2 mixes.

and the flux cored wire what dan is talking about is gasless wire, please dont get them mixed up as you could order a reel of flux cored wire and find you can not use it as it is the wrong stuff.
flux cored wire is what is used on really thick steels when mig/mag welding and this forms a stronger weld than a standard mig/mag weld
so remember it is gasless wire...... as it can be an expensive mistake... flux cored wire normally costs about £100+ a reel

If your stuck to welding outside like me Iv found gasless works best for me ! You can get a gas/gasless mig ( small hobby welder ) for a couple of hundred quid ! Mine works a treat and Iv the advantage of chucking the gas on if in the shed ! But don't plan on knocking up and major constructions

You can get gas from your local Hobby Weld stockist, they supply hobby weld 5 and 15 (light and heavy), I use the light as it's more than adequate for tin to 5mmost £50 for the bottle initially then £38 a reil from tthen on. You get most of your £50 back obn returning the bottle at end of use.

Regards

Stuart

Thanks everyone, most helpfull,