{{OpenJSCAD|title=CAD|code=
<nowiki>//</nowiki> Here we define the user editable parameters:
function getParameterDefinitions() {
  return [[
|   { type: 'float', name: 'beam_width', caption: 'Beam width', default: 40 },
    { type: 'float', name: 'hole_radius', caption: 'Radius of holes', default: 6 },
    { type: 'choice', name: 'length', caption: 'Frame length (holes)', values: [2,3,4,5,10,15,20,25,30,40,50]], captions: [["2","3","4","5","10","15","20","25","30","40","50"]], default: 10 }
  ];
}

<nowiki>//</nowiki> zBeam(length) - create a vertical bitbeam strut 'length' long
<nowiki>//</nowiki> xBeam(length) - create a horizontal bitbeam strug along the X axis
<nowiki>//</nowiki> yBeam(length) - create a horizontal bitbeam strut along the Y axis
<nowiki>//</nowiki> translateBeam(beam, [[x,|y, z]]) - translate bitbeam struts in X, Y, or Z axes in units 'beam_width'

var cylresolution=16;
var beam_width=38;
var hole_radius=8;

function main(params) {

    cylresolution=(params.quality == "1")? 64:16;
    beam_width=params.beam_width;
    hole_radius=params.hole_radius;
    return zBeam(params.length);
}

function xHole(i) {
    return CSG.cylinder( {
        start: [[-1,|beam_width/2, i*beam_width + beam_width/2]],
        end: [[beam_width+1,|beam_width/2, i*beam_width + beam_width/2]],
        radius: hole_radius,
        resolution: cylresolution
    } );
}

function yHole(i) {
    return CSG.cylinder( {
        start: [[beam_width/2,|-1, i*beam_width + beam_width/2]],
        end: [[beam_width/2,|beam_width+1, i*beam_width + beam_width/2]],
        radius: hole_radius,
        resolution: cylresolution
    } );
}

function zBeam(length) {
    var cube = CSG.cube({
        center: [[beam_width/2,|beam_width/2, (length*beam_width)/2]],
        radius: [[beam_width/2,|beam_width/2, (length*beam_width)/2]]
        });
    var holes = [[]];
    for (var i = 0; i < length; i++)
    {
        holes.push(xHole(i));
        holes.push(yHole(i));
    }
    var beam = cube.subtract(holes);
    beam.properties.myConnector = new CSG.Connector([[10,|0, 0]], [[1,|0, 0]], [[0,|0, 1]]);
    return beam;
}

function yBeam(length) {
    return translateBeam(zBeam(length).rotateX(-90), [[0,0,1]]);
}

function xBeam(length) {
    return translateBeam(zBeam(length).rotateY(90), [[0,0,1]]);
}

function translateBeam(beam, t_vector) {
    return beam.translate(t_vector.map(function(n) { return beam_width*n; }));
}

}}