$fn=64;

// --- Parameters ---
plate_width = 200;
plate_length = 300;
plate_thickness = 10;

cols = 4;
rows = 6;
hex_radius = 20; // Circumradius of the hexagons

// --- Model ---
difference() {
    // Main rectangular base plate
    cube([plate_width, plate_length, plate_thickness], center=true);

    // 4x6 Grid of hexagonal cutouts
    for (i = [0 : cols - 1]) {
        for (j = [0 : rows - 1]) {
            
            // Calculate evenly distributed centers
            x_pos = (i - (cols - 1) / 2) * (plate_width / cols);
            y_pos = (j - (rows - 1) / 2) * (plate_length / rows);

            // Hexagon cutout (using $fn=6 for hex shape)
            translate([x_pos, y_pos, 0])
                // Rotate 30 degrees to align flat sides with the grid
                rotate([0, 0, 30])
                cylinder(
                    r = hex_radius, 
                    h = plate_thickness + 2, 
                    center = true, 
                    $fn = 6
                );
        }
    }
}