diff --git a/src/tools/Tools.vue b/src/tools/Tools.vue
index 51755b6..27171f2 100644
--- a/src/tools/Tools.vue
+++ b/src/tools/Tools.vue
@@ -53,11 +53,30 @@ function centerCamera() {
 let selectionEnabled = ref(false);
 let selectedMaterials: Array<Material> = []
 let hasListener = false;
+let ignoreClickFrom: [number, number] | null = null;
+let selectionMoveListener = (event: MouseEvent) => {
+  if (!selectionEnabled.value) return;
+  ignoreClickFrom = [event.clientX, event.clientY];
+};
 
 let selectionListener = (event: MouseEvent) => {
-  if (!selectionEnabled.value) return;
+  if (!selectionEnabled.value) {
+    ignoreClickFrom = undefined;
+    return;
+  }
+  if (ignoreClickFrom) {
+    let [x, y] = ignoreClickFrom;
+    if (Math.abs(event.clientX - x) > 5 || Math.abs(event.clientY - y) > 5) {
+      ignoreClickFrom = undefined;
+      return;
+    }
+    ignoreClickFrom = undefined;
+  }
   let viewer: ModelViewerElement = props.refSData.viewer;
+  // FIXME: Clicking near edges does not work...
+  // FIXME: Clicking with ORTHO camera does not work...
   const material = viewer.materialFromPoint(event.clientX, event.clientY);
+  console.log(material)
   if (material === null) return;
   const wasSelected = selectedMaterials.find((m) => m === material) !== undefined;
   if (wasSelected) {
@@ -85,7 +104,8 @@ function toggleSelection() {
   selectionEnabled.value = !selectionEnabled.value;
   if (selectionEnabled.value) {
     if (!hasListener) {
-      viewer.addEventListener('click', selectionListener);
+      viewer.addEventListener('mouseup', selectionListener);
+      viewer.addEventListener('mousedown', selectionMoveListener); // Avoid clicking when dragging
       hasListener = true;
     }
     for (let material of selectedMaterials) {
diff --git a/src/viewer/ModelViewerWrapper.vue b/src/viewer/ModelViewerWrapper.vue
index c59e329..6cb28a3 100644
--- a/src/viewer/ModelViewerWrapper.vue
+++ b/src/viewer/ModelViewerWrapper.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import {settings} from "../misc/settings";
-import {ModelViewerElement, RGBA} from '@google/model-viewer';
+import {ModelViewerElement} from '@google/model-viewer';
 import {onMounted, ref} from "vue";
 import {$scene} from "@google/model-viewer/lib/model-viewer-base";
 import type {ModelScene} from "@google/model-viewer/lib/three-components/ModelScene";
@@ -33,12 +33,13 @@ onMounted(() => {
 
 <template>
   <model-viewer ref="viewer"
-                style="width: 100%; height: 100%" :src="props.src" alt="The 3D model(s)" camera-controls
-                camera-orbit="30deg 75deg auto"
-                max-camera-orbit="Infinity 180deg auto" min-camera-orbit="-Infinity 0deg auto" disable-tap
+                style="width: 100%; height: 100%" :src="props.src" alt="The 3D model(s)" camera-controls camera-orbit="30deg 75deg auto"
+                max-camera-orbit="Infinity 180deg auto" min-camera-orbit="-Infinity 0deg 1%" disable-tap
                 :exposure="settings.exposure" :shadow-intensity="settings.shadowIntensity" interaction-prompt="none"
                 :autoplay="settings.autoplay" :ar="settings.arModes.length > 0" :ar-modes="settings.arModes"
-                :skybox-image="settings.background" :environment-image="settings.background"></model-viewer>
+                :skybox-image="settings.background" :environment-image="settings.background">
+    <slot></slot> <!-- Controls, annotations, etc. -->
+  </model-viewer>
 </template>
 
 <style scoped>
diff --git a/yacv_server/gltf.py b/yacv_server/gltf.py
index b71f874..ec78013 100644
--- a/yacv_server/gltf.py
+++ b/yacv_server/gltf.py
@@ -1,3 +1,5 @@
+import importlib.metadata
+
 import numpy as np
 from pygltflib import *
 
@@ -10,6 +12,8 @@ class GLTFMgr:
     """A utility class to build our GLTF2 objects easily and incrementally"""
 
     gltf: GLTF2 = GLTF2(
+        asset=Asset(generator=f"yacv_server@{importlib.metadata.version('yacv_server')}"),
+        scene=0,
         scenes=[Scene(nodes=[0])],
         nodes=[Node(mesh=0)],
         meshes=[Mesh(primitives=[])],
@@ -19,16 +23,6 @@ class GLTFMgr:
         samplers=[Sampler(magFilter=NEAREST)],
         textures=[Texture(source=0, sampler=0)],
         images=[Image(bufferView=0, mimeType='image/png')],
-        materials=[
-            Material(name="face", alphaCutoff=None, pbrMetallicRoughness=PbrMetallicRoughness(
-                baseColorTexture=TextureInfo(index=0), baseColorFactor=[1, 1, 0.5, 1])),
-            Material(name="edge", alphaCutoff=None, pbrMetallicRoughness=PbrMetallicRoughness(
-                baseColorFactor=[0, 0, 0.5, 1])),
-            Material(name="vertex", alphaCutoff=None, pbrMetallicRoughness=PbrMetallicRoughness(
-                baseColorFactor=[0.5, 0.5, 0.5, 1])),
-            # Material(name="selected", alphaCutoff=None, pbrMetallicRoughness=PbrMetallicRoughness(
-            #     baseColorTexture=TextureInfo(index=0), baseColorFactor=[1, 0, 0, 1])),
-        ],
     )
 
     def __init__(self):
@@ -40,24 +34,41 @@ class GLTFMgr:
         vertices = np.array([[v[0], v[1], v[2]] for v in vertices_raw], dtype=np.float32)
         indices = np.array([[i[0], i[1], i[2]] for i in indices_raw], dtype=np.uint32)
         tex_coord = np.array([[t[0], t[1]] for t in tex_coord_raw], dtype=np.float32)
-        self._add_any(vertices, indices, tex_coord, mode=TRIANGLES, material=0)
+        self._add_any(vertices, indices, tex_coord, mode=TRIANGLES, material="face")
 
     def add_edge(self, vertices_raw: List[Tuple[float, float, float]]):
         """Add an edge to the GLTF as a new primitive of the unique mesh"""
         vertices = np.array([[v[0], v[1], v[2]] for v in vertices_raw], dtype=np.float32)
         indices = np.array(list(map(lambda i: [i, i + 1], range(len(vertices) - 1))), dtype=np.uint32)
         tex_coord = np.array([])
-        self._add_any(vertices, indices, tex_coord, mode=LINE_STRIP, material=1)
+        self._add_any(vertices, indices, tex_coord, mode=LINE_STRIP, material="edge")
 
     def add_vertex(self, vertex: Tuple[float, float, float]):
         """Add a vertex to the GLTF as a new primitive of the unique mesh"""
         vertices = np.array([[vertex[0], vertex[1], vertex[2]]])
         indices = np.array([[0]], dtype=np.uint32)
         tex_coord = np.array([], dtype=np.float32)
-        self._add_any(vertices, indices, tex_coord, mode=POINTS, material=2)
+        self._add_any(vertices, indices, tex_coord, mode=POINTS, material="vertex")
+
+    def add_material(self, kind: str) -> int:
+        """It is important to use a different material for each primitive to be able to change them at runtime"""
+        new_material: Material
+        if kind == "face":
+            new_material = Material(name="face", alphaCutoff=None, pbrMetallicRoughness=PbrMetallicRoughness(
+                baseColorTexture=TextureInfo(index=0), baseColorFactor=[1, 1, 0.5, 1]))
+        elif kind == "edge":
+            new_material = Material(name="edge", alphaCutoff=None, pbrMetallicRoughness=PbrMetallicRoughness(
+                baseColorFactor=[0, 0, 0.5, 1]))
+        elif kind == "vertex":
+            new_material = Material(name="vertex", alphaCutoff=None, pbrMetallicRoughness=PbrMetallicRoughness(
+                baseColorFactor=[0.5, 0.5, 0.5, 1]))
+        else:
+            raise ValueError(f"Unknown material kind {kind}")
+        self.gltf.materials.append(new_material)
+        return len(self.gltf.materials) - 1
 
     def _add_any(self, vertices: np.ndarray, indices: np.ndarray, tex_coord: np.ndarray, mode: int = TRIANGLES,
-                 material: int = 0):
+                 material: str = "face"):
         assert vertices.ndim == 2
         assert vertices.shape[1] == 3
         vertices = vertices.astype(np.float32)
@@ -86,7 +97,7 @@ class GLTFMgr:
                 if len(tex_coord) > 0 else Attributes(POSITION=accessor_base + 1),
                 indices=accessor_base,
                 mode=mode,
-                material=material,
+                material=self.add_material(material),
             )
         )
 
diff --git a/yacv_server/logo.py b/yacv_server/logo.py
index 015d197..1da3743 100644
--- a/yacv_server/logo.py
+++ b/yacv_server/logo.py
@@ -32,7 +32,7 @@ if __name__ == "__main__":
 
     # Add the CAD part of the logo to the server
     obj = build_logo()
-    Shape(obj).export_stl(os.path.join(ASSETS_DIR, 'logo.stl'))
+    # DEBUG: Shape(obj).export_stl(os.path.join(ASSETS_DIR, 'logo.stl'))
     show_object(obj, 'logo')
 
     # Save the complete logo to a single GLB file
diff --git a/yacv_server/tessellate.py b/yacv_server/tessellate.py
index a5af95c..1a3cacf 100644
--- a/yacv_server/tessellate.py
+++ b/yacv_server/tessellate.py
@@ -21,11 +21,11 @@ from gltf import GLTFMgr
 
 def tessellate(
         ocp_shape: TopoDS_Shape,
-        tolerance: float = 1e-3,
+        tolerance: float = 0.1,
         angular_tolerance: float = 0.1,
         faces: bool = True,
         edges: bool = True,
-        vertices: bool = True,
+        vertices: bool = False,
 ) -> GLTF2:
     """Tessellate a whole shape into a list of triangle vertices and a list of triangle indices."""
     mgr = GLTFMgr()