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  1. #1
    crackhead's Avatar
    Join Date
    Jun 2003
    Location
    Washington State
    Member #
    2351

    How long will a 20lb C02 tank last for a MIG??

    I am getting ready to get a 110v 140A MIG and was wondering how long a 20lb C02 tank would last?? Am i looking at one job or 10 or 15?? I know it is kind of an abstract question, but just wondering..I wouldnt be welding outside, so the flow wouldnt be excessive.. I want to use a 20lb tank for the welder and OBA as well.. Thanks..

    Brian..
    '93 Fullsize Bronco
    SAS'd on 35's
    UGLY

  2. #2
    Banned Gunter's Avatar
    Join Date
    Oct 2003
    Location
    Westminster
    Member #
    2909
    Quote Originally Posted by crackhead
    I am getting ready to get a 110v 140A MIG and was wondering how long a 20lb C02 tank would last?? Am i looking at one job or 10 or 15?? I know it is kind of an abstract question, but just wondering..I wouldnt be welding outside, so the flow wouldnt be excessive.. I want to use a 20lb tank for the welder and OBA as well.. Thanks..

    Brian..
    it will do,if you turn the gas down to say 15 psi(25 is the norm) and dont weld where it is windy,you can do 2 of those 2 1/2 lb spools of wire (.023)to a full 20 cubic foot tank.that is a LOT of welding.i have found a re fill as low as 13$,but it has gone up like everything else has lately.and you'd want to use a gas mixture called c-25.it is a co2/argon mix.co2 for home/hobby reasons i cant understand ,it isnt needed.now here is my experience,15 years with a 110 solar welder (mig)
    and have run maybe 10 feet of flux core,and c-25 and mig all the rest of the time.my solar mig,with gas at 15 psi,will do 2 spools to a tank of gas.i figure most 110 migs will be similar.i also suggest going to a welding supply store and getting a good helmet and good welding gloves,and dont weld in Vans and shorts like i do.LOL
    scott

  3. #3
    Gunter,

    Are you taking PSI or CFPH?
    '85 SR5

  4. #4
    Banned Gunter's Avatar
    Join Date
    Oct 2003
    Location
    Westminster
    Member #
    2909
    Quote Originally Posted by Balance *T1*
    Gunter,

    Are you taking PSI or CFPH?
    psi
    too cheap for a high dollar flow meter,although flowmeter is best i think.

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