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Mandrel Bend Exhaust Protractor

Discussion in 'The Hokey Ass Message Board' started by hr31hr, Oct 6, 2008.

  1. hr31hr
    Joined: Nov 30, 2006
    Posts: 223

    hr31hr
    Member
    from PA

    In deciding what to do for exhaust I finally settled on using mandrel bends and build my own. I purchased a 4x6 band saw from HF on sale to use in the vertical position. What I needed was a away to ensure the cuts we on the axis so that they would connect properly. What I came up with was a protractor to mark the pipe at the angle I wanted. It is made up of scrap masonite and a protractor I downloaded off of the internet and printed on clear plastic. I used the same radius bend pipe throughout. As the pictures show you line up the pipe with the lines and swing the pointer to the desired angle. I would then mark the pipe and then cut with the band saw. I included a couple of shots of the finished product. Total cost of the system including mufflers and the saw was about $325
     

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    mgtstumpy likes this.
  2. axeman39
    Joined: Jan 15, 2006
    Posts: 424

    axeman39
    Member
    from Saco Maine

    KICK ASS! this should be part of tech weeks
     
  3. saltflatmatt
    Joined: Aug 12, 2001
    Posts: 628

    saltflatmatt
    Alliance Vendor

    Ya that is a great idea!! Simple and clean and I cut U bends all day long
     
  4. Z48LT1
    Joined: Feb 6, 2007
    Posts: 45

    Z48LT1
    Member

    I wasn't able to find anything on the HF site that would translate to a '4 x 6 band saw' and I'm having a hard time understanding what you mean by 'in the vertical position'. Got an item number? How about a pic of the band saw cutting a u-bend?

    Many thanks, in advance.

    Cheers -- Gary

    "A man of genius makes no mistakes. His errors are volitional and are the portals of discovery." --  James Joyce
     
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  5. hr31hr
    Joined: Nov 30, 2006
    Posts: 223

    hr31hr
    Member
    from PA

    The item number is 93762-9VGA. There is a table that is attached to the right side rollers when the arm is tilted up. I bought it when it was on sale for $159 and with a 15% off coupon. I have used it many times since the exhaust. Knowing the quality of the product when it got me through the exhaust I considered myself at break even on the cost.
     

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  6. coopdevill65
    Joined: Aug 5, 2007
    Posts: 292

    coopdevill65
    Member
    from tac ,wa

    that is awesome! i do exhaust for a living and never thought of that! thanks!
     
  7. power58
    Joined: Sep 7, 2008
    Posts: 432

    power58
    Member

    Great idea. I voted for ya man. looking forward to building my own set.
     
  8. hr31hr
    Joined: Nov 30, 2006
    Posts: 223

    hr31hr
    Member
    from PA

  9. CharlieLed
    Joined: Feb 21, 2003
    Posts: 2,458

    CharlieLed
    Member

    Nice job on the pipes and great tip on the protractor!
     
  10. NONHOG
    Joined: Dec 3, 2008
    Posts: 172

    NONHOG
    Member

    Old thread but had to say thanks! I built one and did an outline of my 10th grade boys protractor after getting it square. I then covered my markings with clear packing tape.
    Duct tape and a thin sheet of aluminum and I was ready to go.
    Not as nice as yours but it worked like a charm!

    bends BERTONE 006.jpg

    bends BERTONE 008.jpg

    bends BERTONE 009.jpg

    bends BERTONE 012.jpg
     
  11. hr31hr
    Joined: Nov 30, 2006
    Posts: 223

    hr31hr
    Member
    from PA

    Thanks, glad it helped!
     
  12. chevy3755
    Joined: Feb 6, 2006
    Posts: 1,023

    chevy3755
    Member

    good info here.........
     
  13. Thanks for bumping an old one.
    This is great stuff
     

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