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advice construction gym bench for weight lifting metal frame structure

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  • advice construction gym bench for weight lifting metal frame structure

    hello, sorry if I disturb you, I should design a weightlifting bench for my nephew. dimensions:

    wide: 12 inches / about 30cm
    long: 48 inches / about 120cm
    high: from the ground 17 inches / about 43cm
    the boy weighs about 80 kilograms is 180 centimeters tall, he could lift maximum 40 kilograms. would you like to create a light but sturdy structure that is aesthetically pleasing, some suggestions, in what material I build it: tubular boxed or profiled? thanks to those who want to help me

    https://youtu.be/1tx4IecFZeM


    https://youtu.be/dlMP3H5O6o8
    https://youtu.be/eLjDUEaTyLI

    https://youtu.be/eCxAuYpo-WA?t=3

  • #2
    1" or 1 1/2" sq tube...Bob
    Bob Wright

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    • #3
      thanks as structure how to make the frame? classic with 4 feet or upside down H? what better conformation?

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      • #4
        Originally posted by pietromarruggio View Post
        ...or upside down H?...
        Trying to visualize...

        Um, looks like an H?

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        • #5
          Click image for larger version

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ID:	611388I'm sorry I expressed myself badly-

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          • #6
            Just pick a design
            Bob Wright

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            • #7
              Originally posted by pietromarruggio View Post
              thanks as structure how to make the frame? classic with 4 feet or upside down H? what better conformation?
              If you choose the design with upside-down "T"'s for legs, use larger dimension square or rectangular tubing, at least 2"x2" or 2"x3". Design it so the widest dimension of the tubing is used to strengthen the bench against lateral tipping forces. The smaller 1" or 1.5" tubing is ok for a bench with four legged design. Good luck and be sure and post a pic of your creation.
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              Hypertherm Powermax 30
              O/A Rig, Enco 4x6 bandsaw, etc.

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              • #8

                thank you for your valuable intervention

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                • #9
                  I like pictures 2 & 3.

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                  • #10
                    I bought a square box measuring:
                    50x50x 3 mm a bar of 6 linear meters:
                    I cut 4 pieces 45 cm high for the legs, then for the length 2 2 pieces of 125 cm, 2 pieces. 35cm for the width remain 2 pieces 70cm which I put under as crossbars. I welded a leg it came lame. sin, as a remedy? the others perfect. do I put a thickness of 10 mm in there? like a book under the rickety table?

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                    • #11
                      Yep.

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