diff --git a/cura/BuildVolume.py b/cura/BuildVolume.py
index e700b8d7be..7072533ab9 100644
--- a/cura/BuildVolume.py
+++ b/cura/BuildVolume.py
@@ -36,6 +36,7 @@ class BuildVolume(SceneNode):
         self._disallowed_area_mesh = None
 
         self.setCalculateBoundingBox(False)
+        self._volume_aabb = None
 
         self._active_profile = None
         self._active_instance = None
@@ -144,7 +145,7 @@ class BuildVolume(SceneNode):
         else:
             self._disallowed_area_mesh = None
 
-        self._aabb = AxisAlignedBox(minimum = Vector(min_w, min_h - 1.0, min_d), maximum = Vector(max_w, max_h, max_d))
+        self._volume_aabb = AxisAlignedBox(minimum = Vector(min_w, min_h - 1.0, min_d), maximum = Vector(max_w, max_h, max_d))
 
         skirt_size = 0.0
 
@@ -162,6 +163,9 @@ class BuildVolume(SceneNode):
 
         Application.getInstance().getController().getScene()._maximum_bounds = scale_to_max_bounds
 
+    def getBoundingBox(self):
+        return self._volume_aabb
+
     def _onActiveInstanceChanged(self):
         self._active_instance = Application.getInstance().getMachineManager().getActiveMachineInstance()
 
diff --git a/cura/PlatformPhysics.py b/cura/PlatformPhysics.py
index e2bca741a3..7b2a47eef5 100644
--- a/cura/PlatformPhysics.py
+++ b/cura/PlatformPhysics.py
@@ -27,7 +27,6 @@ class PlatformPhysics:
         self._controller.toolOperationStarted.connect(self._onToolOperationStarted)
         self._controller.toolOperationStopped.connect(self._onToolOperationStopped)
         self._build_volume = volume
-
         self._enabled = True
 
         self._change_timer = QTimer()
@@ -50,9 +49,6 @@ class PlatformPhysics:
                 continue
 
             bbox = node.getBoundingBox()
-            if not bbox or not bbox.isValid():
-                self._change_timer.start()
-                continue
 
             build_volume_bounding_box = copy.deepcopy(self._build_volume.getBoundingBox())
             build_volume_bounding_box.setBottom(-9001) # Ignore intersections with the bottom