diff --git a/tractrudeuse_v2.ipynb b/tractrudeuse_v2.ipynb
index 82d90d9..af3901d 100644
--- a/tractrudeuse_v2.ipynb
+++ b/tractrudeuse_v2.ipynb
@@ -6,8 +6,8 @@
    "metadata": {
     "collapsed": true,
     "ExecuteTime": {
-     "end_time": "2026-05-09T01:06:35.539444869Z",
-     "start_time": "2026-05-09T01:06:34.603873035Z"
+     "end_time": "2026-05-09T14:28:10.474719577Z",
+     "start_time": "2026-05-09T14:28:05.535127271Z"
     }
    },
    "source": [
@@ -27,7 +27,7 @@
     "\n",
     "# Fente (guide tract) — face droite, centrée en Y\n",
     "fente_largeur = 152.0  # mm — largeur de la fente -> Y\n",
-    "fente_profondeur = 60.0  # mm — profondeur (longueur de la rainure) -> X\n",
+    "fente_profondeur = 80.0  # mm — profondeur (longueur de la rainure) -> X\n",
     "fente_section = 2.0  # mm — hauteur de la section (épaisseur papier + jeu)\n",
     "\n",
     "# Zone à extruder du tract\n",
@@ -176,7 +176,20 @@
     "            add([s.translate((-cx, 5, 0)) for s in logo_shapes])\n",
     "            scale(by=0.8)\n",
     "\n",
-    "        extrude(amount=-1.5, mode=Mode.SUBTRACT)  # 1.5 mm de profondeur\n",
+    "        extrude(amount=-1, mode=Mode.SUBTRACT)  # 1.5 mm de profondeur\n",
+    "\n",
+    "        # Affichage du nom sur les deux cotés de la boite\n",
+    "        left_face = faces().filter_by(Axis.Y).sort_by(Axis.Y)[0]\n",
+    "        right_face = faces().filter_by(Axis.Y).sort_by(Axis.Y)[-1]\n",
+    "        for side_face in [left_face, right_face]:\n",
+    "            # side_face = Plane(side_face).rotated((0, 90, 0))\n",
+    "            with BuildSketch(side_face) as sk:\n",
+    "                Text(\"GUI-O-TRACTINE\\n3000\",\n",
+    "                     font_size=20,\n",
+    "                     align=Align.CENTER,\n",
+    "                     font=\"Tanker\",\n",
+    "                     rotation=-90)\n",
+    "            extrude(amount=-1, mode=Mode.SUBTRACT)\n",
     "\n",
     "    return p.part\n",
     "\n",
@@ -220,24 +233,23 @@
     "def make_couvercle():\n",
     "    with BuildPart() as p:\n",
     "        # 1. Bloc de base\n",
-    "        Box(couv_ext_x, couv_ext_y, couv_ext_z)\n",
+    "        b = Box(couv_ext_x, couv_ext_y, couv_ext_z)\n",
+    "        chamfer(b.edges(), length=2)\n",
     "\n",
-    "        # 2. Évidement intérieur (lèvre qui coiffe le chapeau)\n",
-    "        with Locations(Location((0, 0, - emboitement_profondeur))):\n",
-    "            Box(\n",
-    "                couv_ext_x - 2 * epaisseur_paroi,\n",
-    "                couv_ext_y - 2 * epaisseur_paroi,\n",
-    "                emboitement_profondeur + 1,\n",
-    "                mode=Mode.SUBTRACT,\n",
-    "            )\n",
+    "        bottom_face = faces().sort_by(Axis.Z)[0]\n",
+    "        with BuildSketch(bottom_face) as sk:\n",
+    "            # Position relative au centre de la face (origine du sketch)\n",
+    "            with Locations(Location((0, 0))):\n",
+    "                Rectangle(couv_ext_x - 2 * epaisseur_paroi, couv_ext_y - 2 * epaisseur_paroi,)\n",
+    "        extrude(amount=-emboitement_profondeur, mode=Mode.SUBTRACT)\n",
     "\n",
     "        # 3. Ouverture rectangulaire centrée sur la cavité\n",
     "        top_face = faces().sort_by(Axis.Z)[-1]\n",
     "        with BuildSketch(top_face) as sk:\n",
     "            # Position relative au centre de la face (origine du sketch)\n",
-    "            with Locations(Location((cav_x + cav_dim_x / 2 - bloc_extrudeur_ext_x / 2, 0))):\n",
+    "            with Locations(Location((0, 0))):\n",
     "                Rectangle(couvercle_ouv_largeur, couvercle_ouv_profondeur)\n",
-    "        extrude(amount=-epaisseur_paroi* 2, mode=Mode.SUBTRACT)\n",
+    "        extrude(amount=-epaisseur_paroi, mode=Mode.SUBTRACT)\n",
     "\n",
     "    return p.part\n",
     "\n",
@@ -262,35 +274,35 @@
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "+c+\n"
+      "+++\n"
      ]
     }
    ],
-   "execution_count": 87
+   "execution_count": 110
   },
   {
    "metadata": {
     "ExecuteTime": {
-     "end_time": "2026-05-09T00:48:40.405653163Z",
-     "start_time": "2026-05-09T00:48:40.393920716Z"
+     "end_time": "2026-05-09T14:28:52.711328232Z",
+     "start_time": "2026-05-09T14:28:52.689567682Z"
     }
    },
    "cell_type": "code",
-   "source": "tract_extrusion_center_x_offset",
+   "source": "bloc_extrudeur_ext_x",
    "id": "810fb3a101c2fccd",
    "outputs": [
     {
      "data": {
       "text/plain": [
-       "32.5"
+       "234.5"
       ]
      },
-     "execution_count": 64,
+     "execution_count": 111,
      "metadata": {},
      "output_type": "execute_result"
     }
    ],
-   "execution_count": 64
+   "execution_count": 111
   }
  ],
  "metadata": {