$fn = 64;

// --- PARAMETERS ---

// Radius of a single hexagon cell (center to vertex)
hex_radius = 25; 

// Thickness of the divider walls (1.2mm is 3 perimeters on a 0.4mm nozzle)
wall_thickness = 1.2; 

// Height of the divider
height = 40; 

// Clearance gap between divider and bin walls for an easy drop-in fit
clearance = 0.4; 


// --- MODULE ---

module hex_divider() {
    // Adjust thickness for the hexagon so the flat sides equal wall_thickness
    t_hex = wall_thickness / cos(30);
    
    linear_extrude(height) {
        intersection() {
            // 1. Bounding Profile: The internal shape of the 7-hex bin
            // We use offset to merge exact shared edges and apply clearance
            offset(delta = -clearance - 0.01) 
            offset(delta = 0.01) {
                union() {
                    // Central hex
                    circle(r = hex_radius, $fn = 6);
                    // 6 surrounding hexes
                    for(i = [0 : 5]) {
                        rotate(i * 60 + 30)
                            translate([hex_radius * sqrt(3), 0])
                                circle(r = hex_radius, $fn = 6);
                    }
                }
            }
            
            // 2. Divider Walls: Central hex ring + 6 radiating spokes
            union() {
                // Central hex ring
                difference() {
                    circle(r = hex_radius + t_hex/2, $fn = 6);
                    circle(r = hex_radius - t_hex/2, $fn = 6);
                }
                
                // 6 radiating spokes separating the outer cells
                for(i = [0 : 5]) {
                    rotate(i * 60)
                        // Overlap by 0.1mm inward to ensure a manifold union
                        translate([hex_radius - t_hex/2 - 0.1, -wall_thickness/2])
                            // Extend outwards well past the boundary; intersection trims it
                            square([hex_radius * 2, wall_thickness]);
                }
            }
        }
    }
}

// --- RENDER ---
hex_divider();