Extrude the whole foot at once

Generate a cross-section of the foot in 2D, then rotate/extrude the
whole thing at once. This is a little easier to reason about than
working in 3D. You can use debug view to see just the cross section with
more ease. It save a line of code, too.

files/U_Box_V104_Test_Cleaned.scad

@@ -342,21 +342,20 @@ module Coque() { //Coque - Shell
 module foot(FootDia, FootHole, FootHeight) {
     Filet = FootFilet;
     color(Couleur1) {
-        difference() {
+        rotate_extrude($fn=100) {
             difference() {
-                cylinder(FootHeight, d=(FootDia + Filet*2), $fn=100);
-                rotate_extrude($fn=100) {
-                    translate([FootDia/2 + Filet, Filet, 0]) {
-                         offset(r=Filet, $fn=Resolution) {
-                             square(FootHeight);
-                         }
-                     }
-                 }
-             }
-             cylinder(FootHeight + 1, d=FootHole + CutoutMargin, $fn=100);
-         }
+                translate([FootHole/2, 0, 0]) {
+                    square([(FootDia - FootHole)/2 + Filet, FootHeight]);
+                }
+                translate([FootDia/2 + Filet, Filet, 0]) {
+                    offset(r=Filet, $fn=Resolution) {
+                        square(FootHeight);
+                    }
+                }
+            }
+        }
     }
-} // Fin module foot
+}
 
 
 /*  Feet module