welding gas

hi people, i know ive read it somewhere that you can use a c02 fire exstinguisher plumbed in to the mig, i only use disposable bottles so would my regulator fit or would i need to fit the welder out with a bigger regulator as ive been offered a co2 bottle but if its not going to work(fit) then theres no point in accepting it


cheers guys

channi said:

hi people, i know ive read it somewhere that you can use a c02 fire exstinguisher plumbed in to the mig, i only use disposable bottles so would my regulator fit or would i need to fit the welder out with a bigger regulator as ive been offered a co2 bottle but if its not going to work then theres no point in accepting it


cheers guys

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Almost certainly wouldnt fit

ok cheers it was worth asking

using co2 for welding creates brittle welds.

ok cheers

do hobbyweld or something similiar. it's not too badly priced

they probably do i was just trying to save a couple of quid really becuse it was offered as a freebee, the disposable one work out bloody exspensive,il have to put my hand in my pocket in the new year

channi said:

they probably do i was just trying to save a couple of quid really becuse it was offered as a freebee, the disposable one work out bloody exspensive,il have to put my hand in my pocket in the new year

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with hobby when i did it you pay like 60quid for the bottle and about 30quid for a refill.

you just swap the bottle for a refill and when you are totally done you get the 60-12 fee back.

might have changed now.

i got a fix n weld just down the road their prices are about sixty a cougar i think it is and no real contract the bottle if i remember rightly just pay for a refill

You need a regulator for a pub gas bottle, there's loads on eBay and a thread on here about this very subject the other day.

Discokids said:

You need a regulator for a pub gas bottle, there's loads on eBay and a thread on here about this very subject the other day.

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i know about a pub bottle but i was asking about a fire exstingisher, i thought i read a thread the other day but i couldnt find it i should of searched

It's in the disco section, currently half way down the 4th page. My point was that if you wish to use a fire extinguisher you need to obtain a suitable regulator such as one for a pub gas bottle. Regs for the small disposable bottles will only fit small disposable bottles.

channi said:

hi people, i know ive read it somewhere that you can use a c02 fire exstinguisher plumbed in to the mig, i only use disposable bottles so would my regulator fit or would i need to fit the welder out with a bigger regulator as ive been offered a co2 bottle but if its not going to work(fit) then theres no point in accepting it


cheers guys

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thats what i asked

Discokids said:

It's in the disco section, currently half way down the 4th page. My point was that if you wish to use a fire extinguisher you need to obtain a suitable regulator such as one for a pub gas bottle. Regs for the small disposable bottles will only fit small disposable bottles.

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yep ok just read the thread apologies all round any chance of a pic to see how its set up

Here you go. Pretty basic really, could even call it a bodge!

Thor1950 said:

using co2 for welding creates brittle welds.

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would you say your welds are brittle ? cheers for the pics

Not really. I always test them using land rover special tool No1. No problems so far.

channi said:

would you say your welds are brittle ? cheers for the pics

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no they are not on the thickness your dealing with, just doesnt give as good a penetration but again probably not a problem

not sure why CO2 would cause brittle welds, AFAIK the gas is to sheild it from oxidising, CO2 is good at this, Argon better, as a result you need less argon to sheild than you do CO2???
Seeing as a big pub bottle costs me around £11 a fill, and everyone else I know uses CO2 for general work, Ill stick with CO2 unless somone can give me a good reason not to

Though pressbrake might have answered my question before I got round to penning a reply