diff --git a/scripts/phase2_geometry.py b/scripts/phase2_geometry.py
index c4dcd15..1219622 100644
--- a/scripts/phase2_geometry.py
+++ b/scripts/phase2_geometry.py
@@ -1,6 +1,7 @@
 import bpy
 import mathutils
 
+
 def resolve_to_mesh_objects(obj):
     """Recursively resolve collection instances and linked instances to their source mesh objects."""
     if obj.type == 'MESH':
@@ -65,6 +66,7 @@ def calculate_global_bounds(selected_objects):
         'size': mathutils.Vector((max_x - min_x, max_y - min_y, max_z - min_z))
     }
 
+
 def create_aligned_boundary_cube(bounds, parent=None, mode=None):
     if not bounds:
         return None
@@ -91,18 +93,21 @@ def create_aligned_boundary_cube(bounds, parent=None, mode=None):
             (0, -size.y, size.z)
         ]
     else:
-        # CIRCLE mode: origin at bottom-front-left
-        obj.location = min_v.copy()
+        # CIRCLE mode: origin at center X,Y, min Z — cube extends equally in all X/Y directions
+        center_x = (min_v.x + max_v.x) / 2
+        center_y = (min_v.y + max_v.y) / 2
+        obj.location = (center_x, center_y, min_v.z)
         verts = [
-            (0, 0, 0),
-            (size.x, 0, 0),
-            (size.x, size.y, 0),
-            (0, size.y, 0),
-            (0, 0, size.z),
-            (size.x, 0, size.z),
-            (size.x, size.y, size.z),
-            (0, size.y, size.z)
+            (-size.x / 2, -size.y / 2, 0),
+            (size.x / 2, -size.y / 2, 0),
+            (size.x / 2, size.y / 2, 0),
+            (-size.x / 2, size.y / 2, 0),
+            (-size.x / 2, -size.y / 2, size.z),
+            (size.x / 2, -size.y / 2, size.z),
+            (size.x / 2, size.y / 2, size.z),
+            (-size.x / 2, size.y / 2, size.z)
         ]
+
     faces = [
         (0, 1, 2, 3), (4, 5, 6, 7), (0, 1, 5, 4),
         (1, 2, 6, 5), (2, 3, 7, 6), (3, 0, 4, 7)
@@ -117,5 +122,6 @@ def create_aligned_boundary_cube(bounds, parent=None, mode=None):
 
     return obj
 
+
 if __name__ == "__main__":
     print("Phase 2: Geometry (Origin Alignment) logic loaded.")
\ No newline at end of file