From e6308f9f946ec1cb8c3164bf422dad688fe59c38 Mon Sep 17 00:00:00 2001
From: Daniele Verducci <daniele.verducci@ichibi.eu>
Date: Sat, 6 Dec 2025 12:28:45 +0100
Subject: [PATCH] Added internal flange

---
 enclosure/fabula_enclosure.scad | 33 +++++++++++++++++++++++++++++++--
 1 file changed, 31 insertions(+), 2 deletions(-)

diff --git a/enclosure/fabula_enclosure.scad b/enclosure/fabula_enclosure.scad
index 9274b6c..9c665d3 100644
--- a/enclosure/fabula_enclosure.scad
+++ b/enclosure/fabula_enclosure.scad
@@ -9,6 +9,7 @@ screw_diameter = 3;
 // Internal global variables
 rounded_edge_diameter = height;
 box_cut_height = 10;
+flange_height = 3;
 standoff_diameter=screw_diameter*3;
 
 // Screw standoff
@@ -55,15 +56,16 @@ module main_body() {
 
 // Closed Box
 module closed_box() {
-    // Hollow box
     difference() {
         union() {
+            // Hollow box
             difference() {
                 main_body();
                 scale([0.95, 0.95, 0.95]) {
                     main_body();
                 }
             }
+            
             // Screws standoffs near curved edges
             translate([width/2 - rounded_edge_diameter/2, -height/2 + standoff_diameter/2, 0]) {
                 standoff();
@@ -109,13 +111,40 @@ module box() {
 
 // Upper cap
 module cap() {
-    // TODO: Flangia interna che non interferisca con gli standoff
     difference() {
         closed_box();
         translate([0, 0, - box_cut_height]) {
             cube([width*2, height*2, depth], true);
         }
     }
+    // Lip
+    translate([0, 0, box_cut_height - 1]) {
+        intersection() {
+            difference() {
+                scale([0.95, 0.95, 0.95]) {
+                    main_body();
+                }
+                scale([0.92, 0.92, 0.92]) {
+                    main_body();
+                }
+                // Clear screws standoffs near curved edges
+                translate([width/2 - rounded_edge_diameter/2, -height/2 + standoff_diameter/2, 0]) {
+                    standoff();
+                }
+                translate([-width/2 + rounded_edge_diameter/2, height/2 - standoff_diameter/2, 0]) {
+                    standoff();
+                }
+                // Clear screws standoff near sharp edges
+                translate([-width/2 + standoff_diameter/2, -height/2 + standoff_diameter/2, 0]) {
+                    standoff();
+                }
+                translate([width/2 - standoff_diameter/2, height/2 - standoff_diameter/2, 0]) {
+                    standoff();
+                }
+            }
+            cube([width*2, height*2, 3], true);
+        }
+    }
 }
 
 closed_box();