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  1. #1
    Student
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    Jan 2020
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    UK
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    Smile 4 New Leveling Knobs !

    Hi there !
    I just made a new improvement to my U20 ! This improvement is essential if we want: - The settings are more comfortable! - more precise bed adjustment! - No glue or fixing to install it! In addition, this model is extremely solid! I needed to make this improvement because it is a crucial step before making another new one! I'll tell you about it in another video

    The STL file is available in video's description !

    https://youtu.be/VmK-gorF01g

  2. #2
    Super Moderator curious aardvark's Avatar
    Join Date
    Jul 2014
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    7,345
    If you incorporate a nylock locking nut into the levelling knobs - it's much better and once set, beds almost never go out of level.

  3. #3
    Student
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    Thank you very much for your suggestion !
    Have you any example of it ?

  4. #4
    Super Moderator curious aardvark's Avatar
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    Jul 2014
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    yep made these for my ctc i3:
    locknut knob.JPG
    fairly basic.
    You just jam/glue the locknut in the middle. As there's no vertical stress on the knob, that works fine.
    Think these use nuts for 3mm bolts. But easy to adjust in openscad:

    // locking nut wheels
    // wheel 20mm height 9mm
    $fn=100;
    nc=5; // number cutouts
    nk=nc; // number knobs
    difference(){
    cylinder(d=20,h=5);


    cylinder(d=6,h=9,$fn=6); // size of locking nut

    for (i = [1:nc]) rotate([0,0,(360/nc)*i])translate([0,10,-0.5]) cylinder(d=8,h=10);

    } // end diff

    rotate([0,0,35]) for (i = [1:nk]) rotate([0,0,(360/nk)*i])translate([0,9,0]) cylinder(d=5,h=5);
    Highlighted line line is the hexagonal hole for the nut. Measure max diameter of nut. Pointy bit to pointy bit. stick that in as the cylinder diameter. Easiest to adjust overall height in the slicer. just adjust z-axis (make sure to untick x and y axis first).

  5. #5
    Student
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    Jan 2020
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    UK
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    OK that's clear for me !
    Thank you so much for your idea I will work on it !

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