$fn=64;

// Base Panel Dimensions
panel_width = 200;
panel_length = 200;
panel_thickness = 15;

// T-Track Dimensions (Sized for standard M6 hardware)
track_bottom_width = 12;
track_top_width = 6.5;
track_total_depth = 9;
track_bottom_depth = 4.5;

// Layout Parameters
num_pairs = 5;
pair_spacing = panel_width / num_pairs; 
intra_pair_spacing = 18; // Distance between the two tracks in a single pair

module t_slot(len) {
    // Wide bottom part of the T-slot
    translate([-track_bottom_width/2, -len/2 - 1, panel_thickness - track_total_depth])
        cube([track_bottom_width, len + 2, track_bottom_depth]);
        
    // Narrow top part of the T-slot (extends slightly above panel for clean cut)
    translate([-track_top_width/2, -len/2 - 1, panel_thickness - track_total_depth])
        cube([track_top_width, len + 2, track_total_depth + 1]);
}

difference() {
    // Main Base Panel
    translate([-panel_width/2, -panel_length/2, 0])
        cube([panel_width, panel_length, panel_thickness]);
        
    // Subtract 5 pairs of dual T-tracks
    for (i = [0 : num_pairs - 1]) {
        translate([(i - (num_pairs - 1) / 2) * pair_spacing, 0, 0]) {
            // Left track of the pair
            translate([-intra_pair_spacing/2, 0, 0])
                t_slot(panel_length);
                
            // Right track of the pair
            translate([intra_pair_spacing/2, 0, 0])
                t_slot(panel_length);
        }
    }
}