diff --git a/enclosure/fabula_enclosure.scad b/enclosure/fabula_enclosure.scad
index 0dae0cd..9274b6c 100644
--- a/enclosure/fabula_enclosure.scad
+++ b/enclosure/fabula_enclosure.scad
@@ -1,15 +1,42 @@
 // FABULA open source storyteller enclosure
 
+// Global dimensions, change here
 width = 120;
 height = 60;
 depth = 40;
+screw_diameter = 3;
+
+// Internal global variables
+rounded_edge_diameter = height;
+box_cut_height = 10;
+standoff_diameter=screw_diameter*3;
+
+// Screw standoff
+module standoff() {
+    cylinder(h = depth, d = standoff_diameter, center = true);
+}
+
+// Screw hole, to be subtracted from standoff and box
+module screw_hole() {
+    // Hole where the screw will thread into
+    cylinder(h = depth - 2, d = screw_diameter, center = true);
+    // Hole where the screw will pass with slack, without threading (in the lid)
+    translate([0, 0, depth/2 - box_cut_height/2]) {
+        cylinder(h = box_cut_height + 2, d = screw_diameter*1.5, center = true);
+    }
+    // Screw head bevel
+    bevel_depth = 1;
+    translate([0, 0, depth/2 - bevel_depth/2 + 0.1]) {
+        cylinder(h = bevel_depth, d2 = screw_diameter * 2.5, d1 = screw_diameter*1.5, center = true);
+    }
+}
+
 
 // Main body
 module main_body() {
-    rounded_edge_diameter = height;
     module half_body() {
         cube([width - rounded_edge_diameter/2, height/2, depth]);
-        cylinder(h = depth, d = rounded_edge_diameter, $fn=64);   
+        cylinder(h = depth, d = rounded_edge_diameter, $fn=256);   
     }
 
     union() {
@@ -26,9 +53,70 @@ module main_body() {
     }
 }
 
-difference() {
-    main_body();
-    scale([0.9, 0.9, 0.9]) {
-        main_body();
+// Closed Box
+module closed_box() {
+    // Hollow box
+    difference() {
+        union() {
+            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();
+            }
+            translate([-width/2 + rounded_edge_diameter/2, height/2 - standoff_diameter/2, 0]) {
+                standoff();
+            }
+            // 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();
+            }
+        }
+        // Screw holes near curved edges
+        translate([width/2 - rounded_edge_diameter/2, -height/2 + standoff_diameter/2, 0]) {
+            screw_hole();
+        }
+        translate([-width/2 + rounded_edge_diameter/2, height/2 - standoff_diameter/2, 0]) {
+            screw_hole();
+        }
+        // Screws holes near sharp edges
+        translate([-width/2 + standoff_diameter/2, -height/2 + standoff_diameter/2, 0]) {
+            screw_hole();
+        }
+        translate([width/2 - standoff_diameter/2, height/2 - standoff_diameter/2, 0]) {
+            screw_hole();
+        }
+    }
+        
+}
+
+// Lower box
+module box() {
+    difference() {
+        closed_box();
+        translate([0, 0, depth - box_cut_height]) {
+            cube([width*2, height*2, depth], true);
+        }
     }
 }
+
+// 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);
+        }
+    }
+}
+
+closed_box();
+
diff --git a/enclosure/main.scad b/enclosure/main.scad
new file mode 100644
index 0000000..4350aa6
--- /dev/null
+++ b/enclosure/main.scad
@@ -0,0 +1,6 @@
+use <fabula_enclosure.scad>
+$fn=32;
+
+
+translate([0, -50, 0]) box();
+translate([0, 50, 0]) rotate([180, 0, 0]) cap();
\ No newline at end of file