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Thread: Building a Big Bender

  1. #1

    Array
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    01-24-2017
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    New Zealand
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    1981 Mitsubishi L200
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    Building a Big Bender

    Work on my 1st gen tray and tailgate will necessitate a rather large sheet metal bender. Big ones are quite expensive, so I'm making one

    The main ingredients are


    a 6m length of 10mm thick angle iron (100x70mm) i got this used from a construction company and cut it into 2m lengths on site so i could 1. lift it, and b. fit it in the back of my truck.
    This works out perfect as i wanted 180cm of usable bend

    Then some 20mm ID pipe and some 20mm OD steel rod to make the hinges.
    and some small rectangular box section to make an a frame on the clamp and gussets etc

    i will also need some nuts and bolts, some kind of handle, and maybe some scooter or motorcycle springs to help lift the clamp section off the work piece


    i figured on 10cm of hinge each end, and marked it out so the pipe would sit on centre with the corner




    hinges on, admittedly a poor job. a drop saw would be nice to have, but i make do with an angle grinder.


    I cut a V into the hinge area and laid down a lot of beads, i probably also want to do the other side and grind flat. But 1 side can support the length of the whole thing, so maybe its strong enough. Amazingly perhaps the hinges also work smoothly



    The clamp section will go something like this, i may need to grind the leading edge to get a nice crisp bend
    and this way i can make the most of my bending angle



    will tap and thread a grub screw into the hinge so the pin doesn't fall out. I really want to be able to break this thing down - as you can see it takes up my whole bench - and its very heavy and awkward to move even in sections

  2. #2

    Array
    Status
    Offline
    Join Date
    01-24-2017
    Posts
    277
    Location

    New Zealand
    Vehicle

    1981 Mitsubishi L200
    Engine

    Other
    As it went i ended up with 179.5cm between the hinges, and i have spent under $150 on steel etc, could be a good money spinner on the side

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