Paul Humphreys Posted November 9, 2008 Share Posted November 9, 2008 Now I know there is 2 types, one is "ok" for mig welding and the other is not Now what are the 2 and what is the one that is OK to use? BTW this is for a friend as I use the proper stuff and can not take my full size bottle down there every time he wants a little welding. Paul Quote Link to comment Share on other sites More sharing options...
Guest noggy Posted November 9, 2008 Share Posted November 9, 2008 id love to know the answer, because theres 4 full bottles of pub gas at my sisters house, that were left by the students that lived there before! Quote Link to comment Share on other sites More sharing options...
LandyManLuke Posted November 9, 2008 Share Posted November 9, 2008 'Pub gas' is either CO2, Nitrogen or a Nitrogen CO2 mix. The former is OK (not ideal for thinner metals though), the latter two are not. Quote Link to comment Share on other sites More sharing options...
Paul Humphreys Posted November 9, 2008 Author Share Posted November 9, 2008 'Pub gas' is either CO2, Nitrogen or a Nitrogen CO2 mix.The former is OK (not ideal for thinner metals though), the latter two are not. Thanks for that. He should have known as he use to run a pub!! Paul Quote Link to comment Share on other sites More sharing options...
TD5 power Posted November 30, 2008 Share Posted November 30, 2008 hi co2 as a shielding gas will give more penetration and a coarse weld appearance but should be ok also depending on the way the co2 is stored ie liquid or gas you may need a vaporiser to prevent damage to gauges. Nitrogen can cause porosity in the weld which wouldn't be good for any structural welds. if only doing small amounts of welding would you get away with the one use cylinders? matt Quote Link to comment Share on other sites More sharing options...
Handy_Andy Posted December 3, 2008 Share Posted December 3, 2008 id love to know the answer, because theres 4 full bottles of pub gas at my sisters house, that were left by the students that lived there before! Just to clarifi further the most comon pub bottles are: 1. Pure Carbon Dioxide ( will be in a black bottle) 2. 30% Co2/70% nitrogen.( will be in a green bottle) 3. 50% Co2/50% nitrogen. 4. 60% Co2/40% nitrogen. 5. Pure nitrogen. Not used any for welding though. Quote Link to comment Share on other sites More sharing options...
Eddie Posted December 7, 2008 Share Posted December 7, 2008 I used to use CO2 but changed to Argoshield and what a differance I know it's expensive if you don't use it regularly (bottle rental and all that) but in my opinion it's worth it. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted December 7, 2008 Share Posted December 7, 2008 I don't use my welder regularly but consider ~£75 per year pretty good value for having decent welds on my car and anything else I do. Quote Link to comment Share on other sites More sharing options...
LandyManLuke Posted December 7, 2008 Share Posted December 7, 2008 As above, I'd far rather pay 60 - 70 a year rather than 10 quid a pop for a disposable, or have 'pub gas' which 9 times out of ten isn't right for the job. Quote Link to comment Share on other sites More sharing options...
teamplayer Posted December 12, 2008 Share Posted December 12, 2008 As above, I'd far rather pay 60 - 70 a year rather than 10 quid a pop for a disposable, or have 'pub gas' which 9 times out of ten isn't right for the job. I thought about pub-gas for welding but when I looked into it it worked out under £2 per week to have the proper stuff (cougar from air products) delivered to my door. you can't get pint of lager for £2 these days, so for me it's value for money Mike Quote Link to comment Share on other sites More sharing options...
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