$fn=64;

// --- Parameters ---
arm_length = 42.5;       // Length from center to the end of the arm
height = 30.0;           // Total height of the divider
wall_thickness = 1.8;    // Thickness of the divider walls
hub_radius = 2.5;        // Radius of the central reinforcing hub
snap_bump_radius = 1.2;  // Radius of the snap-in bumps
snap_bump_offset = 0.5;  // How far the bumps protrude past the arm length

module radial_snap_divider() {
    union() {
        // Central reinforcing hub
        cylinder(h=height, r=hub_radius);
        
        // Generate the 3 radial arms (120 degrees apart)
        for(angle = [0, 120, 240]) {
            rotate([0, 0, angle]) {
                // Main arm wall
                translate([0, -wall_thickness/2, 0])
                    cube([arm_length, wall_thickness, height]);
                
                // Snap-in bumps on the outer edge for locking into the bin
                translate([arm_length + snap_bump_offset, 0, height * 0.25])
                    sphere(r=snap_bump_radius);
                    
                translate([arm_length + snap_bump_offset, 0, height * 0.75])
                    sphere(r=snap_bump_radius);
                    
                // Rounded end-cap for smooth insertion and flush fit
                translate([arm_length, 0, 0])
                    cylinder(h=height, r=wall_thickness/2);
            }
        }
    }
}

// Render the object
radial_snap_divider();