$fn=64;

// --- Parameters ---

// Thickness of the panels to be inserted
panel_thickness = 3.0; 

// Thickness of the connector walls
wall_thickness = 2.0; 

// Depth the panels insert into the connector
insertion_depth = 15.0; 

// Overall height of the connector
connector_height = 20.0; 

// --- Implementation ---

// Small overlap to ensure manifold geometry
eps = 0.01; 

difference() {
    // Outer Solid Body
    union() {
        // Main horizontal body
        translate([0, 0, connector_height/2])
            cube([panel_thickness + 2*insertion_depth, panel_thickness + 2*wall_thickness, connector_height], center=true);
        
        // Perpendicular stem body (overlaps into the horizontal body for a manifold union)
        translate([0, panel_thickness/2 + (wall_thickness + insertion_depth)/2, connector_height/2])
            cube([panel_thickness + 2*wall_thickness, insertion_depth + wall_thickness, connector_height], center=true);
    }
    
    // Inner Slots to Subtract
    union() {
        // Main horizontal slot (cuts through both ends)
        translate([0, 0, connector_height/2])
            cube([panel_thickness + 2*insertion_depth + 2*eps, panel_thickness, connector_height + 2*eps], center=true);
        
        // Perpendicular stem slot (cuts through the front and overlaps into the horizontal slot)
        translate([0, panel_thickness/2 + (wall_thickness + insertion_depth)/2, connector_height/2])
            cube([panel_thickness, insertion_depth + wall_thickness + 2*eps, connector_height + 2*eps], center=true);
    }
}