$fn=64;

// --- Parameters ---
panel_length = 100;      // Medium length
panel_height = 50;       // 50mm height
panel_thickness = 2;     // Standard thickness for 3D printing
corner_radius = 2;       // Rounded corners for easy insertion
tab_width = 30;          // Width of the top grab tab
tab_height = 8;          // Height of the top grab tab

// --- Modules ---

// Helper module to create a rounded rectangle
module rounded_rect(length, width, height, radius) {
    hull() {
        translate([radius, radius, 0]) 
            cylinder(r=radius, h=height);
        translate([length - radius, radius, 0]) 
            cylinder(r=radius, h=height);
        translate([length - radius, width - radius, 0]) 
            cylinder(r=radius, h=height);
        translate([radius, width - radius, 0]) 
            cylinder(r=radius, h=height);
    }
}

// Main divider panel module
module divider_panel() {
    union() {
        // Main divider body
        rounded_rect(panel_length, panel_height, panel_thickness, corner_radius);
        
        // Top grab tab (overlaps slightly to ensure manifold geometry)
        translate([(panel_length - tab_width) / 2, panel_height - corner_radius, 0])
            rounded_rect(tab_width, tab_height + corner_radius, panel_thickness, corner_radius);
    }
}

// --- Render ---
divider_panel();