Resources

// 2x2 Lego Cube 

// OpenSCAD version

difference() {

    cube([10,10,6]);

    translate([1,1,-1]) {

        cube([8,8,6]);

    }

}

translate([2.5,2.5,6]) {

    cylinder(1,1.5,1.5, $fn=20);

}

translate([7.5,2.5,6]) {

    cylinder(1,1.5,1.5, $fn=20);

}

translate([2.5,7.5,6]) {

    cylinder(1,1.5,1.5, $fn=20);

}

translate([7.5,7.5,6]) {

    cylinder(1,1.5,1.5, $fn=20);

}

translate([5,5,0]) {

    difference() {

        cylinder(5,2.035,2.035, $fn=20);

        translate([0,0,-1]) {

            cylinder(6,1.5,1.5, $fn=20);

        }

    }                          

}

// 2x2 Lego Cube 

// OpenJSCAD version

function main() {

    return union (

        difference (

            cube([10,10,6]),

            translate([1,1,-1],

                cube([8,8,6])

            )

        ),

        translate([2.5,2.5,5],

            cylinder({h:2,r:1.5})

        ),

        translate([7.5,7.5,5],

            cylinder({h:2,r:1.5})

        ),

        translate([2.5,7.5,5],

            cylinder({h:2,r:1.5})

        ),

        translate([7.5,2.5,5],

            cylinder({h:2,r:1.5})

        ),

        translate([5,5,0],

                difference(

                    cylinder({h:6,r:2.035}),

                    cylinder({h:6,r:1.5})

                )                            

          )

        )

}