$fn=64;

// --- Parameters ---
// Cup dimensions
cup_outer_diameter = 60;
cup_inner_diameter = 54;
cup_height = 70;
cup_floor_thickness = 3;

// Dovetail dimensions (ArtArsenal / standard rail)
dovetail_width_wide = 20;
dovetail_width_narrow = 12;
dovetail_depth = 5;
dovetail_height = 50;

// Standoff dimensions (connects cup to dovetail)
standoff_width = 12;
standoff_depth = 8;

// --- Model ---
union() {
    // Main Cup Body
    difference() {
        cylinder(d=cup_outer_diameter, h=cup_height);
        
        // Hollow interior
        translate([0, 0, cup_floor_thickness])
            cylinder(d=cup_inner_diameter, h=cup_height + 1);
    }

    // Mounting Mechanism
    // Center the mount vertically on the cup
    translate([0, 0, (cup_height - dovetail_height) / 2]) {
        
        // Standoff block (overlaps with cup and dovetail to ensure manifoldness)
        translate([-standoff_width/2, cup_outer_diameter/2 - 2, 0])
            cube([standoff_width, standoff_depth + 2, dovetail_height]);

        // Male Dovetail
        translate([0, cup_outer_diameter/2 + standoff_depth - 0.1, 0])
            linear_extrude(height=dovetail_height)
            polygon([
                [-dovetail_width_narrow/2, 0],
                [ dovetail_width_narrow/2, 0],
                [ dovetail_width_wide/2, dovetail_depth],
                [-dovetail_width_wide/2, dovetail_depth]
            ]);
    }
}