Thread: 8 x 4 build

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  1. #1
    reefy86's Avatar
    Lives in Nottingham, United Kingdom. Last Activity: 11 Hours Ago Has been a member for 2-3 years. Has a total post count of 159. Received thanks 3 times, giving thanks to others 12 times.
    hi before i update on any other parts i just want some advice regarding bed frame for stability and rigid. frame is made up of mild steel and is 100mm x 150mm.

    cheers

    ash

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  2. #2
    looks fine to me, but I would perhaps suggest making butt plates, and bolting, to allow for adjustment. I was so grateful for them when I was assembling mine

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  3. #3
    toomast's Avatar
    Lives in Tartu, Estonia. Last Activity: 22 Hours Ago Has been a member for 4-5 years. Has a total post count of 79.
    Add some vertical diagonals too. Diagonals make things rigid.
    If you don't have 100x150 steel tubes already bought then I would advise smaller profile with more thickness. Also you have strange overlapping 100x150 vertical posts in lower part of the frame...

  4. #4
    reefy86's Avatar
    Lives in Nottingham, United Kingdom. Last Activity: 11 Hours Ago Has been a member for 2-3 years. Has a total post count of 159. Received thanks 3 times, giving thanks to others 12 times.
    thanks guys, i will be using butt plates and as for the strange overlapping its because there was beams going across the bottom too but trying to keep cost down while keeping a strong frame, i have changed the frame now using 90x90 profiles 5mm thick. here is the frame.

    cheers

    ash

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  5. #5
    reefy86's Avatar
    Lives in Nottingham, United Kingdom. Last Activity: 11 Hours Ago Has been a member for 2-3 years. Has a total post count of 159. Received thanks 3 times, giving thanks to others 12 times.
    does anyone know a company that can pre drill holes for the linear rails ect?

    cheers
    ash

  6. #6
    That frame revision looks sweet now Ash.

    .Me
    .Me

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  8. #7
    reefy86's Avatar
    Lives in Nottingham, United Kingdom. Last Activity: 11 Hours Ago Has been a member for 2-3 years. Has a total post count of 159. Received thanks 3 times, giving thanks to others 12 times.
    thanks lee

  9. #8
    reefy86's Avatar
    Lives in Nottingham, United Kingdom. Last Activity: 11 Hours Ago Has been a member for 2-3 years. Has a total post count of 159. Received thanks 3 times, giving thanks to others 12 times.
    just throwing in my gantry design, the z axis is inside the x axis frame which is supported by 2 200x100mm 10mm thick mild steel box, the z axis has a maximum height of 250mm (would like to go higher but 250mm seems to be the recommended height for rigid and stability.)

    what do you think?

    cheers

    ash

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  11. #9
    Are you going to use screws at that length ? driven with a motor on the end.
    ..Clive
    The more you know, The better you know, How little you know

  12. #10
    reefy86's Avatar
    Lives in Nottingham, United Kingdom. Last Activity: 11 Hours Ago Has been a member for 2-3 years. Has a total post count of 159. Received thanks 3 times, giving thanks to others 12 times.
    do you mean ball screws? if so then yes both sides :) using nema 34 motors and servo drivers.

    cheers

    ash

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