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Question for anyone that has fabricated w/ tubes

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by K5thatShmobs, Oct 18, 2002.

  1. K5thatShmobs

    K5thatShmobs 1/2 ton status

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    When welding piping together, does anyone have any suggestions on what method to use when notching out the pipe ends in order to get a flush fit when welding the end of one tube to the side of another? What about when doing angles?
     
  2. laketex

    laketex 3/4 ton status

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    well a notcher works pretty well;)...this one is badass:

    http://www.vansantent.com/tube_notcher.htm

    And you can cut it in a V on the chop saw, or just grind/torch/plasma some arcs out of it. I've been fishmouthing some with a bench grinder lately and it works allright. It doesn't have to be completely flush, a tad bit of gap is actually a good thing, allows for a little better penetration, kinda like chamfering...In other words, it doesn't have to be perfect.

    HTH,
    Bryan
     
  3. imiceman44

    imiceman44 1 ton status Premium Member

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    I bought a tube notcher for 50 bucks at harbor freight tools, and I already had the hole saw
     
  4. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Just to clarify....there IS difference when you refer to "tube" and "pipe"....they are not the same thing. My guess in this case is that we are talking about tubing? /forums/images/graemlins/smile.gif

    Anyway, a holesaw jig can make the cut VERY precisely. From what I've heard, it's actually TOO perfect and doesn't leave a "valley" to lay the weld into. I bought a punch-style notcher which can do fishmouths also, but leaves a more blunt edge, which will hopefully be better for welding.

    It's not to say that a holesaw style can't work, I think you just need to spend a little extra time prepping the cut so that it's got a better shape for the weld.


    Anyway....I'm FAR from an expert, but thought that would give you some things to consider. /forums/images/graemlins/cool.gif
     
  5. Boss

    Boss 1/2 ton status Author

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    That Vansant (or should I say, JD2) one is what I have. /forums/images/graemlins/thumb.gif
     
  6. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    I use a variety of methods from chop saw to hole saw to angle grinder, depending on the joint. In any case, for something as critical as a roll bar joint, I ALWAYS cut a 45* chamfer on the end before welding. I want to be 100% sure I get a good weld all the way around.
     
  7. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Whatever Russ says....GOES!

    He is one of my heros. /forums/images/graemlins/thumb.gif


    ps. Hey Russ, I got about 600 feet of tubing delivered to my house this morning! I'm eating Weaties and getting ready for some serious bending FUN! /forums/images/graemlins/cool.gif
     
  8. BadDog

    BadDog SOL Staff Member Super Moderator Author

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    Man, the world must be hurting for heros! /forums/images/graemlins/laugh.gif

    Congrats on the pending project. Looking forward to the updates and pics!
     

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