$fn=64;

// --- PARAMETERS ---

// Hex key sizes (metric)
hex_sizes = [1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0];
clearance = 0.8;
hole_spacing = 13.0;

// Main body dimensions
body_width = 130.0;
body_height = 20.0;
body_depth = 25.0;

// Multiboard peg dimensions
peg_diameter = 7.8; // Snug push-fit for standard 8mm multiboard holes
peg_length = 6.0;
peg_positions = [-50, 0, 50]; // 25mm grid compatible spacing

// --- MODULES ---

module hex_allen_key_holder() {
    union() {
        difference() {
            // Main Body Block
            translate([0, 0, body_depth / 2])
                cube([body_width, body_height, body_depth], center=true);

            // Hex Key Holes
            for (i = [0 : 8]) {
                x_pos = -52 + (i * hole_spacing);
                hole_dia = hex_sizes[i] + clearance;

                // Holes are offset away from the wall to clear the pegboard
                translate([x_pos, 0, 14.5])
                    rotate([90, 0, 0])
                    cylinder(h=body_height + 2, d=hole_dia, center=true);
            }
        }

        // Multiboard Push-Fit Pegs
        for (x = peg_positions) {
            // 0.1mm Z-translation ensures manifold overlap with the main body
            translate([x, 0, 0.1]) {
                rotate([180, 0, 0]) {
                    // Main peg shaft
                    cylinder(h=peg_length - 1.5 + 0.1, d=peg_diameter);
                    
                    // Chamfered tip for easy insertion
                    translate([0, 0, peg_length - 1.5 + 0.1])
                        cylinder(h=1.5, d1=peg_diameter, d2=peg_diameter - 1.5);
                }
            }
        }
    }
}

// --- RENDER ---
hex_allen_key_holder();