// Bendlink by Calirie Kate Plamenco is marked with CC0 1.0.
// To view a copy of this license, visit https://creativecommons.org/publicdomain/zero/1.0/

// Parameters
radius_outer = 4;
radius_inner = 3;
height = 10 / 2;
distance = 8;
distance2 = 16;


bar_width = 1;   // Width of the connecting bar
bar_height = height; // Height of the connecting bar
bar_length = 49; // Adjust length to fit the model (extend across all cylinders)

// Module for Creating Outer Cylinders
module create_outer_cylinders(radius, height, distance, distance2) {
    hull() {
        cylinder(h = height, r = radius, center = true);
        translate([0, distance, 0]) cylinder(h = height, r = radius, center = true);
        translate([0, -distance, 0]) cylinder(h = height, r = radius, center = true);
        translate([0, distance2, 0]) cylinder(h = height, r = radius, center = true);
        translate([0, -distance2, 0]) cylinder(h = height, r = radius, center = true);
    }
}

// Module for Subtracting Inner Cylinders
module subtract_inner_cylinders(radius, height, distance, distance2) {
    cylinder(h = height, r = radius, center = true);
    translate([0, distance, 0]) cylinder(h = height, r = radius, center = true);
    translate([0, -distance, 0]) cylinder(h = height, r = radius, center = true);
    translate([0, distance2, 0]) cylinder(h = height, r = radius, center = true);
    translate([0, -distance2, 0]) cylinder(h = height, r = radius, center = true);
}

// Module for Connecting Bar along the X-axis
module connecting_bar(length, width, height) {
    translate([27, 0, 0]) {
        cube([length, width, height], center = true);
    }
}

// Main Operation
union() {
    // Perform the difference operation for the main structure
    difference() {
        create_outer_cylinders(radius_outer, height, distance, distance2);
        subtract_inner_cylinders(radius_inner, height, distance, distance2);
    }
    
    // Attach a straight connecting bar along the X-axis
    connecting_bar(bar_length, bar_width, bar_height);
}

// 
translate([70, 0, 0])
rotate([0, 0, 90])
union() {
    // Perform the difference operation for the main structure
    difference() {
        create_outer_cylinders(radius_outer, height, distance, distance2);
        subtract_inner_cylinders(radius_inner, height, distance, distance2);
    }
    

}