click and grow garden extension [WIP]

click_grow_extension.scad

$fn = 100;

translate([0,0,100/2]) {
    difference() {
        cube([35,15,100],center=true);
        cube([35-2,15-2,100.01],center=true);

        translate([0,0,-35]) {
            translate([35/2-2,0,0]) {
                cube([2,20,30.01],center=true);
            }
            translate([-(35/2-2),0,0]) {
                cube([2,20,30.01],center=true);
            }
        }
    }
}

module bump() {
    module bump_a() {
        rotate([90,0,0]) {
            difference() {
                cylinder(h=15,r=2,center=true);
                translate([-2,0,0]) cube([4,4,15.01],center=true);
            }
        }
    }
    difference() {
        union() {
            bump_a();
            translate([0,0,-3.4]) bump_a();
        }
        translate([2.5,0,-3.4/2]) rotate([90,0,0]) cylinder(h=15.1,r=1.5,center=true);
    }
}

// notches
translate([35/2-0.5,0,10]) {
    bump();
}

mirror([1,0,0]) translate([35/2-0.5,0,10]) {
    bump();
}

translate([0,0,80/2+80]) { // 20cm overlap
    difference() {
        cube([35+2,15+2,80],center=true);
        cube([35,15,80.01],center=true);
    }
}

// todo below
module notch() {
    translate([35/2,0,80+80-25]) rotate([0,0,90]) cube([5,2,2], center=true);
}
notch();
translate([0,0,-30]) notch();
translate([0,0,-60]) notch();