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  1. #14
    Join Date
    Aug 2009
    Location
    Eastern Panhandle WV
    Posts
    12
    Post Likes
    Quote Originally Posted by hvacker View Post
    You might need to cut some steel someday.
    Yeah I am kind of leaning that way too. Don't have a lot of money to throw around righ now. I always seem to break something on my tractor and have to cut a chunk of steel to fix it. I have been at work all weekend, 12hr cateye and didn't get to the computer. I am in the middle of putting in a straight A/C 3ton colman for a fellow that he bought used. Got the coil in Friday. You have to know this guy, he wants to spend little to no money on it. Someone did a really good job on his duct work. After setting the coil I wanted to have a friend of mine make another transition for him but he didn't want to spend the money so he helped me cut down the existing duct.
    I got it in there and it looks fine just does not have all the nice connections that it originally did.
    While at R.E. Micheals I was looking at the torch sets and the salesman asked me which one I wanted. I told him I was right now setting a 3ton R-22 unit and he told me to just use 6% soft solder and Mapp gas. I didnn't think this was a good idea but he said it will work. I have always seen people use the 15% sil-foss.
    I think I will borrow a air/acet torch from the instructor that gave me tha EPA exam.

  2. #15
    Join Date
    Apr 2003
    Location
    nyc
    Posts
    816
    Post Likes

    Thumbs down

    Quote Originally Posted by Starflite3 View Post
    Yeah I am kind of leaning that way too. Don't have a lot of money to throw around righ now. I always seem to break something on my tractor and have to cut a chunk of steel to fix it. I have been at work all weekend, 12hr cateye and didn't get to the computer. I am in the middle of putting in a straight A/C 3ton colman for a fellow that he bought used. Got the coil in Friday. You have to know this guy, he wants to spend little to no money on it. Someone did a really good job on his duct work. After setting the coil I wanted to have a friend of mine make another transition for him but he didn't want to spend the money so he helped me cut down the existing duct.
    I got it in there and it looks fine just does not have all the nice connections that it originally did.
    While at R.E. Micheals I was looking at the torch sets and the salesman asked me which one I wanted. I told him I was right now setting a 3ton R-22 unit and he told me to just use 6% soft solder and Mapp gas. I didnn't think this was a good idea but he said it will work. I have always seen people use the 15% sil-foss.
    I think I will borrow a air/acet torch from the instructor that gave me tha EPA exam.
    Do not braze with mapp gas. Whether using 6% or 15%, use either turbo-torch air-acetylene system or oxy-actylene. As mentioned previously on this thread, if you can only afford one, get the oxy-acetylene. Turbos are nice and light, but you cannot get by with only that...

  3. #16
    Join Date
    Jun 2009
    Location
    Toronto
    Posts
    7
    Post Likes
    Quote Originally Posted by crackertech View Post
    oxy/acetylene with a rose bud tip.In and out fast.
    Do you wear a mask when welding?

  4. #17
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    26,615
    Post Likes
    Quote Originally Posted by hvactech79 View Post
    Do you wear a mask when welding?
    When welding, yes.

    When brazing or soldering, no need, really.

  5. #18
    Join Date
    Sep 2005
    Location
    florida
    Posts
    5,514
    Post Likes
    Quote Originally Posted by hvactech79 View Post
    Do you wear a mask when welding?
    Mask,mask I don't need no stinking mask.
    I love the smell of phosgene first thing in the morning:

    To apply for professional membership click here


    Educational forums are open.

    If you would like to submit a link or an article or other related info to the EF. click here

  6. #19
    Join Date
    Aug 2009
    Location
    Birmingham, Al
    Posts
    6
    Post Likes

    Ox-Acetylene?

    Quote Originally Posted by crackertech View Post
    Mask,mask I don't need no stinking mask.
    I use the Turbo for soft silver (mostly water lines). For gas lines, most all local codes require hard silver brazing. For this and anything bigger than 1/2 inch, an ocy-acetylene is easier and faster. Try a turbo torch on a cold, breezy morning on a rooftop working on a 1 1/8 inch line! Good luck! I pay the extra money and use 15% silver rods. I use 45% silver on steel-to-copper with flux. Of course, this depends if you know HOW to braise. Just look at some units that have been installed sometime. Lots of piss-poor braising that lead to lots of refrigerant leaks.

  7. #20
    Join Date
    Oct 2001
    Location
    Stoney Creek, Ontario
    Posts
    885
    Post Likes
    why would someone buy a torch, employer should provide this

  8. #21
    Join Date
    Jan 2008
    Location
    In the work truck
    Posts
    3,137
    Post Likes
    i bought both my oxy/acet and turbo torch. what size tanks do you use for the oxy/acty

  9. #22
    Join Date
    Apr 2007
    Location
    Kaufman county, Texas
    Posts
    12,503
    Post Likes
    I use the smaller tank for the turbo, same size as the oxy kit. Johnstone sells an adapter.

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