$fn=64;

// --- Parameters ---
wall_thickness = 2;
comp_width = 45;
comp_depth = 55;
comp_height = 30;
cols = 3;
rows = 2;

// Labels for each compartment
labels = ["M2", "M3", "M4", "M5", "M6", "M8"];

// Calculate overall dimensions
total_width = cols * comp_width + (cols + 1) * wall_thickness;
total_depth = rows * comp_depth + (rows + 1) * wall_thickness;
total_height = comp_height + wall_thickness;

difference() {
    // Main outer block
    cube([total_width, total_depth, total_height]);
    
    // Subtract compartments and engrave labels
    for (r = [0 : rows - 1]) {
        for (c = [0 : cols - 1]) {
            idx = r * cols + c;
            
            // Calculate X and Y positions for the current compartment
            pos_x = wall_thickness + c * (comp_width + wall_thickness);
            pos_y = wall_thickness + r * (comp_depth + wall_thickness);
            
            // 1. Compartment cutout
            translate([pos_x, pos_y, wall_thickness])
                cube([comp_width, comp_depth, comp_height + 1]);
            
            // 2. Label text (embossed 0.5mm into the floor)
            if (idx < len(labels)) {
                translate([
                    pos_x + comp_width / 2, 
                    pos_y + comp_depth / 2, 
                    wall_thickness - 0.5
                ])
                linear_extrude(1)
                    text(
                        labels[idx], 
                        size = 12, 
                        halign = "center", 
                        valign = "center", 
                        font = "Arial:style=Bold"
                    );
            }
        }
    }
}