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    lombardd's Avatar
    lombardd Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 8, 2010, 03:12 AM
    I need to know what gas to use for which application.
    Will I be able to braze a copper pipe (12mm diameter with a wall thickness of 1mm) with my benz-o-matic kid I bought with the blue canister gas, or do I need to purchase the mapp gas canister (yellow one ) for this purpose?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Jul 8, 2010, 03:47 AM

    The blue canister will not work with anything but a basic solder joint.

    The Mappgas isn't really recommended for brazing either... simply can't get the materials hot enough to guarantee a good job. If you can braze, it will take forever to do! Check out this video on the subject:

    http://www.youtube.com/watch?v=wGOQkTlL1OI

    For most brazing applications you'll need to rent/purchase an oxy/acetylene or oxy/mappgas set up.

    Back to you...

    Mark
    hkstroud's Avatar
    hkstroud Posts: 11,929, Reputation: 899
    Home Improvement & Construction Expert
    		  
    #3

    Jul 8, 2010, 10:32 AM

    Brazing can be done quite nicely with acetylene and a Turbohead torch. For 12mm copper use an A-14 tip (1/2")

    Possible translation problem here. Do you really mean braze or do you mean what we in US call solder?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #4

    Jul 8, 2010, 01:01 PM
    What are you connecting? If it is plumbing, 12mm is 1/2+/-", you can solder with pretty much any container gas although I use Mapp. If AC, and 1/2 is not normal size , you need to braze or silver solder and will need Acetylene or Acetylene/O2.! Use lead free solder if this is a water line!
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