added 3D model of the case

models/casev3.d3dwrk

@@ -0,0 +1,41 @@
+{
+    "workspace_views": {
+        "2e6ed1a8-9720-48ab-837e-7a12f3d52f12": {
+            "cam_distance": 239.0181427001953,
+            "cam_quat": [
+                0.3640005588531494,
+                0.25565049052238464,
+                0.3874821364879608,
+                0.8074676990509033
+            ],
+            "center": [
+                21.389747619628906,
+                34.19933319091797,
+                19.231369018554688
+            ],
+            "curvature_comb_scale": 0.0,
+            "document": {
+                "body_views": {
+                    "460e3ed3-ab22-4bf4-af53-43d710467f23": {
+                        "solid_model_visible": true,
+                        "visible": false
+                    },
+                    "92c1b6e4-efa4-455c-8b18-91a3d4932633": {
+                        "solid_model_visible": true,
+                        "visible": true
+                    },
+                    "ebcf7cd1-b421-4911-a005-677af99b1a8f": {
+                        "solid_model_visible": true,
+                        "visible": true
+                    }
+                },
+                "current_group": "4537ebbf-b847-41d4-aa8d-01d3b2fa1cbd",
+                "entity_views": {},
+                "group_views": {},
+                "show_construction_entities_from_previous_groups": true
+            },
+            "name": "",
+            "projection": "ortho"
+        }
+    }
+}