scad/pressfit_headband.scad

$fn=360;

module inserticle() {
    cube([4.6, 7.4, 5.4], center=true);
}

module testblock_inserticle() {
    union() {
        translate([0, 0, 5.4/2]) inserticle();
        translate([0, 0, -5]) cube([15, 12, 10], center=true);
    }
}

module testblock_recepticle() {
    rotate(180, [0, 1, 0]) difference() {
        translate([0, 0, 5]) cube([15, 12, 10], center=true);
        translate([0, 0, 5.4/2]) inserticle();
    }
}

module partial_ring(part, radius, thickness, height) {
    rotate(180-180*part, [0, 0, 1])
        rotate_extrude(angle=360*part)
            translate([radius, 0])
                square([thickness, height], center=true);
}

module headband(size=60, height=4.6, thickness=3, part=0.7, stretch_len=40, tip_len=0.1, tip_bend=20, rake_depth=1.5, rake_width=0.5, rake_stretch=2) {
    union() {
        color("purple") partial_ring(part, radius=size, thickness=thickness, height=height);
        rotate( 90-180*part, [0, 0, 1]) translate([stretch_len/2,  size, 0]) {
            color("orange") cube([stretch_len, thickness, height], center=true);
            color("purple") translate([stretch_len/2, tip_bend, 0])
                rotate(90+180*tip_len, [0, 0, 1])
                    partial_ring(
                        part=tip_len,
                        radius=tip_bend,
                        thickness=thickness,
                        height=height
                    );
        }
        rotate(-90+180*part, [0, 0, 1]) translate([stretch_len/2, -size, 0]) {
            color("orange") cube([stretch_len, thickness, height], center=true);
            color("purple") scale([1, -1, 1]) translate([stretch_len/2, tip_bend, 0])
                rotate(90+180*tip_len, [0, 0, 1])
                    partial_ring(
                        part=tip_len,
                        radius=tip_bend,
                        thickness=thickness,
                        height=height
                    );
        }
        for (i=[-size/2:size/2]) {
            rotate(i*2-rake_width/2, [0, 0, 1]) intersection() {
                scale([1, 1, rake_stretch/(rake_depth/height)])
                    rotate_extrude(angle=rake_width)
                        translate([rake_depth/2-size+thickness/2, 0, 0])
                            scale([1, 0.5, 1])
                                circle(r=rake_depth, $fn=3);
                translate([rake_depth/2-size+thickness/2, 0, 0])
                    color("red")
                        cube([4*rake_depth, 4*rake_depth, height], center=true);
            }
        };
    };
}

module pressfit_headband(size=60, height=4.6, thickness=3, part=0.7, stretch_len=40, tip_len=0.1, tip_bend=20, rake_depth=1.5, rake_width=0.5, rake_stretch=2) {
    union() {
        color("pink") { $a=48;
            rotate( $a, [0, 0, 1]) {
                translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
                translate([-size-3, 0,]) rotate(90, [0, 1, 0]) inserticle();
            }
            rotate(-$a, [0, 0, 1]) {
                translate([-size-4, 0,]) rotate(90, [0, 1, 0]) inserticle();
                translate([-size-3, 0,]) rotate(90, [0, 1, 0]) inserticle();
            }
        }
        headband(
            size=size,
            height=height,
            thickness=thickness,
            part=part,
            stretch_len=stretch_len,
            tip_len=tip_len,
            tip_bend=tip_bend,
            rake_depth=rake_depth,
            rake_width=rake_width,
            rake_stretch=rake_stretch
        );
    };
}

pressfit_headband();